Bringing home your first guinea pig is exciting — but the real shopping list is longer, and a little different, from what most pet shops put in their “starter kit” box. Before your pigs arrive you genuinely need a big cage, unlimited timothy hay, plain vitamin-C pellets, fresh vegetables every day, a water bottle, at least two hideouts, and safe bedding — plus, ideally, a second guinea pig, because they’re herd animals who suffer on their own. This checklist walks through every essential in plain order, links our in-depth guide for each, features a proven Amazon pick for the true must-haves, and — just as importantly — flags the popular products you should never buy.
Quick answer: The non-negotiable guinea pig starter kit is a big cage, unlimited timothy hay, vitamin-C pellets, fresh veg daily, a water bottle, two or more hideouts and safe bedding (fleece or paper). The two rules that matter most: buy a cage far bigger than the pet store recommends (at least 7.5 sq ft for one pig, 10.5 sq ft for a pair), and never keep a guinea pig alone — they need the company of their own kind.
Last reviewed and updated for 2026 — refreshed the full new-owner checklist, current cage-size and vitamin-C guidance, safe-bedding rules, an updated “what to avoid” section, and companion-animal welfare advice.
This guide is for information only and isn’t a substitute for veterinary advice — if your guinea pig seems unwell, contact an exotic or small-animal vet.
Two things trip up almost every new owner, so it’s worth saying them plainly before you spend a penny. First, the cage sold as a “guinea pig starter home” in most shops is far too small — guinea pigs are active grazers who need floor space to popcorn and run, not a hamster-style box. Second, a single guinea pig is a lonely guinea pig; welfare bodies like the RSPCA are clear that they should be kept in pairs or small groups. Get those two right and everything else on this list is genuinely easy.
Table of Content
The guinea pig starter kit checklist at a glance
| Essential | Why it’s on the list | Quick tip |
|---|---|---|
| A big cage | Room to run, popcorn and live well | 7.5 sq ft for one, 10.5 sq ft for a pair — bigger is better |
| Unlimited timothy hay | ~80% of the diet; wears teeth, feeds the gut | Always available, fresh and dust-free |
| Vitamin-C pellets | Plain, fortified daily ration | Timothy-based, no muesli mixes |
| Fresh veg daily | Their source of vitamin C (they can’t make it) | A cup of leafy greens + bell pepper daily |
| Water bottle | Clean water, always available | Leak-resistant; check the ball-valve daily |
| 2+ hideouts | Prey animals need places to feel safe | One per pig, plus one — two exits ideal |
| Safe bedding | Absorbent, dust-free, comfy floor | Fleece or paper; never cedar |
| Food bowl | Tidy, tip-proof pellet feeding | Heavy ceramic they can’t flip |
| Carrier | Safe ride home and vet trips | Hard-sided, secure door, solid floor |
| Grooming kit | Brush + nail clippers for basic care | Small-animal clippers, done little and often |
| Chews & toys | Enrichment and dental wear | Untreated wood, hay-based, foraging |
| Playpen (optional) | Supervised floor time | Solid, hop-proof height, washable mat |
How we chose these picks
We don’t run a lab test bench, and we won’t pretend to. The products featured here were chosen on clear, guinea-pig-first criteria: safety (solid floors, no wheels or balls, secure latches), correct sizing for cavies rather than hamsters, materials that are easy to clean and safe to chew, durability and value. We weighed those against long-standing owner reviews and reputable guinea-pig and exotic-vet sources — the RSPCA, VCA and Guinea Lynx among them. In our experience the gear new owners keep for years is the simple, roomy, easy-to-clean kind, not the gadgety kind.
Housing: the cage comes first (and biggest)
A cage far bigger than the pet store sells
- Spacious Living Area: Measures 47 x 24 x 14 inches; Provides 8 square feet of interactive space; meets veterinarian and breeder recommendations for one to three guinea pigs
- Protective Wire Top & Divider Panel: Fully removable mesh top provides added security from other pets or children; hinged divider panel with lock-in-place ramp separates play and care areas-great for cleaning or managing multiple guinea pigs
- Secure Yet Accessible: 14-inch high sides keep guinea pigs safely contained while offering easy access for pet owners; suitable for indoor or outdoor use
- Quick Assembly: Sets up in minutes with no tools required; designed for first-time guinea pig owners and experienced cavy enthusiasts alike
- Expandable & Modular: Connect multiple habitats for endless configurations; lock-in-place doors double as ramps for easy movement between connected enclosures
Cage size is the single most important decision you’ll make, and it’s where the pet-store “starter kit” lets owners down. Aim for a minimum of 7.5 square feet for one guinea pig and about 10.5 square feet for a bonded pair — roughly a 2×3 grid (about 30 x 36 in) for one and a 2×4 grid (about 30 x 50 in) for two — and remember bigger is always better. Look for a solid floor (never wire — it causes painful sore hocks), low sides you can reach into, and a base that wipes clean. Many owners either buy a large ready-made cage or build a modular C&C cage for more space per dollar. The MidWest Guinea Habitat below is the popular, roomy, tool-free option most new owners start with; add the divider only for temporary separation, not to shrink the living space.
Dig deeper: our full cage setup guide, how big a cage should be, the best guinea pig cages, large cages and the best cages for two all help you choose. Also plan where to put the cage before it arrives.
Safe bedding (fleece or paper)
Bedding lines the cage floor to soak up urine and give soft footing. The two safe choices are washable fleece (economical over time, needs an absorbent layer underneath) or dust-extracted paper bedding (great absorbency, low fuss). The hard rule: never cedar, and avoid non-kiln-dried pine — the aromatic oils (phenols) in these softwoods irritate a guinea pig’s airways and can harm the liver. Skip anything dusty or scented. Compare your options in our guide to the best bedding for guinea pigs and, if you’re leaning reusable, the best fleece bedding.
Food and water: hay does about 80% of the job
Unlimited timothy hay
If you buy nothing else well, buy the hay. Grass hay — usually timothy — should make up roughly 80% of the diet and be available 24/7; constant chewing wears down teeth that never stop growing and keeps the gut moving. Buy it fresh, green and sweet-smelling, and store it dry so it doesn’t go dusty or mouldy. (Young pigs under about six months and pregnant sows also get alfalfa; adults stay on timothy.) See our pick of the best hay for guinea pigs. We don’t feature an Amazon box for hay because it’s perishable and best bought fresh and often.
Plain, vitamin-C-fortified pellets
Pellets are a small daily top-up — about an eighth of a cup for an adult — not the main meal. Choose plain, uniform, timothy-based pellets fortified with vitamin C, and avoid the colourful “muesli” mixes with seeds, corn and dried fruit: pigs pick out the sugary bits and leave the healthy ones. Our vitamin C food list explains how pellets fit alongside fresh food. As with hay, pellets are perishable, so we link the guide rather than box a product.
Fresh veg every day (their vitamin C)
Unlike us, guinea pigs cannot make their own vitamin C and can’t store much, so they need a daily dietary source or they risk scurvy. A daily cup or so of safe leafy greens plus a little vitamin-C-rich veg such as bell pepper covers it. Adults need roughly 20–25 mg of vitamin C a day. Check what’s safe and how much in our full list of what guinea pigs can eat and the vitamin C food list.
A leak-resistant water bottle
- Leak-Proof Nozzle: U.S. patented Choco Nose design prevents water leakage; provides a dry and mess-free cage environment while keeping pets’ water clean and fresh.
- Easy Installation: Screw-on bracket allows simple setup with snap-on and snap-off design for convenient cleaning and refilling.
- Mini-Sized Nozzle: 10 mm nozzle recommended for guinea pigs, ferrets, hamsters, and bunnies; 10.2 fl.oz capacity; made of BPA-free material.
- Nail-On Bracket Option: Can be nailed to wall or wooden furniture with screws (not included); compatible with most standard PET bottles for eco-friendly reuse.
- Durable Construction: Made with high-quality, pet-safe materials designed for long-term use; resists chewing and ensures reliable performance over time.
Fresh water must always be available. Most owners use a bottle with a ball-valve spout because it stays cleaner than an open bowl (which fills with hay and bedding), though some keep a heavy tip-proof bowl as a backup. Whatever you pick, tap the metal ball daily to make sure water is actually dispensing, and scrub the bottle regularly to stop algae. The Choco Nose below is a popular leak-resistant pick; see more in our guide to the best water bottles for guinea pigs.
A food bowl
A simple heavy ceramic bowl keeps pellets tidy and off the bedding, and a bonded pair usually does best with two so nobody guards the food. Ceramic is ideal because guinea pigs are champion bowl-flippers and it’s heavy enough to resist a determined nudge, plus it wipes clean and won’t harbour smells. See our picks for the best guinea pig food bowls.
A hay rack (optional but tidy)
A hay rack isn’t essential — many owners simply pile hay in a corner or in a spare hidey — but a good one keeps hay cleaner and cuts waste. If you use one, pick a low or ground-level design your pig can’t climb inside or trap its head or legs in, and steer clear of hanging hay balls, which are a genuine strangulation risk. The Kaytee manger below is the cheap, safe classic — just remove the little salt spool it ships with (see the “what to avoid” section for why). More options in our guide to the best hay racks for guinea pigs.
Comfort, safety and health
Two or more hideouts
- Made of durable Plastic, igloos are easy to clean and stain resistant
- Encourages natural nesting instincts in small animals
- One piece construction
- Ideal for guinea pigs, ferrets, dwarf rabbits, chinchillas, and other small furry animals
- Igloos come in assorted cool colors and they're made of translucent plastic so you can see your pet inside
Guinea pigs are prey animals, and a pig without somewhere to hide is a stressed pig. Provide at least one hideout per guinea pig, plus one spare, so nobody gets cornered — pigloos, wooden houses, fleece tunnels and forage hides all work. Two openings are ideal so a pig is never trapped by a cage-mate. The classic plastic igloo below is easy to clean and a reliable first hideout; keen chewers may prefer untreated wood or a grass hide. Browse our roundup of the best guinea pig hideouts.
A carrier for the ride home and vet trips
- SECURE AND COZY DEN: The Petmate Two-Door portable dog crate provides easy access with top or front-loading doors, offering a safe and comfortable space for your pet's natural denning instincts
- AIRLINE-APPROVED: This small dog carrier airline approved meets most airline cargo specs. Ventilation holes provide fresh air and 360-degree visibility for your pet
- IDEAL FOR SMALL PETS: Designed as a puppy carrier for small dogs 0-15 lbs, the 24-inch crate offers room for pets to stand, turn, and lie comfortably; with space for a cushion to enhance comfort
- EASY ASSEMBLY AND MAINTENANCE: The plastic dog crate shell is simple to clean; a stay-dry moat directs fluids away from pets
- CONVENIENT: Featuring steel doors with easy-squeeze latches and a foldable handle, this USA-made pet carrier for dogs & cats provides a less stressful travel experience
You’ll need a carrier on day one to bring your pigs home safely, and again for vet visits — and because guinea pigs hide illness until it’s serious, the day you need it can come fast. Choose a hard-sided, well-ventilated carrier with a secure door and a solid floor you can line with fleece; hard shells protect far better in a car than a flimsy box. The Petmate below is our top all-rounder; see the full comparison in our guide to the best guinea pig carriers, and know the warning signs in our full list of guinea pig illnesses.
A brush and small-animal nail clippers
- Professional quality
- Helps prevent nails from breaking and snagging
- 2-1/2-Inch long, 3-1/4-inch wide, 6-1/4-inch high
- Easy to use
Even short-haired pigs benefit from a gentle weekly brush, and every guinea pig needs its nails trimmed every few weeks — overgrown nails curl and cause pain. A small soft brush and a pair of proper small-animal nail clippers cover the basics; go little and often, snipping just the tip and avoiding the pink quick. The Kaytee clippers below are a simple, widely used pair. See our guinea pig grooming kit guide and our pick of the best guinea pig nail clippers.
Enrichment: chews, toys and floor time
Safe chews and toys
A few safe chews and toys keep a guinea pig busy and help wear teeth that grow constantly. Stick to untreated wood, hay-based and forage toys, and skip anything with small parts, loose string or bells. Nothing here needs to be expensive — a handful of apple-wood sticks, a stuffable paper bag and a tunnel go a long way. See our guides to the best guinea pig chews and the best guinea pig toys.
A playpen for supervised floor time
Daily floor time lets guinea pigs stretch their legs beyond the cage. A playpen keeps them contained on a washable mat while you supervise — look for solid, hop-proof height and never a wire floor. It’s a nice early add-on rather than a day-one must. Our guide to the best guinea pig playpens covers safe options.
What you DON’T need — and should avoid
Just as important as what to buy is what to leave on the shelf. These popular products are unnecessary at best and dangerous at worst:
- Exercise wheels and exercise balls — never. A guinea pig’s spine isn’t built to arch the way a wheel or ball forces it, and these can cause serious back, leg and foot injuries; balls also risk overheating and suffocation. Give floor time in a playpen instead.
- Salt and mineral licks — unnecessary. A proper diet of hay, veg and fortified pellets already supplies the minerals a guinea pig needs, so these wheels and blocks just clutter the cage. Remove the salt spool if your hay rack ships with one.
- Cedar and dusty pine shavings. The aromatic phenols in cedar (and non-kiln-dried pine) irritate the airways and can harm the liver. Use fleece or paper bedding.
- Harnesses and leashes. “Walking” a guinea pig is risky — their delicate spines and ribs aren’t made for it, and the outdoors is stressful and full of predators. Skip them.
- Sandpaper ledges and grinding accessories. They rub feet raw and don’t wear nails safely. Trim nails with proper clippers instead.
- Tiny pet-store “guinea pig” cages. Most are far below the minimum size. A too-small cage is the number-one welfare mistake new owners make — size up.
A companion is essential, not optional
This one isn’t a product, but it belongs at the top of the shopping list: guinea pigs are herd animals, and being kept alone is genuinely bad for their welfare. The RSPCA and other welfare bodies advise keeping at least two compatible guinea pigs together — good pairings include two females, a neutered male with a female, or brothers raised together. A companion isn’t a luxury or an “upgrade”; it’s part of meeting a guinea pig’s basic needs, so plan your cage size for two from the start. If you can only start with one, make finding a friend your next priority, and introduce them carefully on neutral ground.
Frequently asked questions
What do you need to buy before getting a guinea pig?
The essentials are a large cage with a solid floor, unlimited timothy hay, plain vitamin-C pellets, fresh vegetables, a water bottle, at least two hideouts, safe bedding (fleece or paper), a food bowl and a carrier. A grooming kit, chews and a playpen round it out. Most importantly, plan for two guinea pigs, since they need the company of their own kind.
How much does a guinea pig starter kit cost?
The cage is by far the biggest cost, and a proper setup usually adds up to more than the cheap boxed kits shops sell. Budget the most for a roomy cage and safe bedding, then smaller amounts for a water bottle, hideouts, bowls, a carrier and grooming tools. Hay and fresh vegetables are ongoing costs rather than one-off purchases, so factor those into your weekly shopping too.
Are pet-store guinea pig starter kits any good?
Usually not, mainly because the cage they include is far too small for a guinea pig, let alone a pair. You’re better off buying a large cage or building a C&C cage and adding safe, correctly sized accessories separately. Treat a boxed “starter kit” as a starting point at most, and always size up the cage.
Do I really need two guinea pigs?
Yes. Guinea pigs are social herd animals, and welfare organisations such as the RSPCA advise keeping at least two together because being alone is stressful and detrimental to their health. Good combinations include two females, a neutered male with a female, or brothers raised together. Plan your cage size for a pair from the outset.
What should you not buy for a guinea pig?
Avoid exercise wheels and exercise balls, which can injure a guinea pig’s spine, legs and feet; salt or mineral licks, which are unnecessary with a good diet; cedar and non-kiln-dried pine shavings, which harm the airways; harnesses and leashes; sandpaper ledges; and any cage that’s below the minimum size. These are the products most likely to do more harm than good.
What bedding is safest for a new guinea pig?
The safest choices are washable fleece over an absorbent layer, or dust-extracted paper bedding. Never use cedar, and avoid non-kiln-dried pine, because the aromatic oils in these softwoods can irritate a guinea pig’s respiratory tract and affect the liver. Whatever you use, keep it dry, low-dust and unscented.
The bottom line
A complete guinea pig starter kit really comes down to a handful of things done well: a cage far bigger than the pet store recommends, unlimited timothy hay, plain vitamin-C pellets, fresh veg every day, a water bottle, at least two hideouts and safe fleece or paper bedding — plus a food bowl, a carrier and a basic grooming kit. Add chews, toys and a playpen as you settle in. Skip the wheels, balls, salt licks and cedar shavings entirely. And treat a second guinea pig as part of the kit, not an extra: they’re herd animals who thrive in company. Get the cage and the companionship right and you’ve done the hard part — the rest of this list is the easy, fun bit.
Guinea Pig Tube is reader-supported. Some links above are affiliate links and we may earn a small commission, at no extra cost to you — see our affiliate disclosure. Our recommendations are always based on what’s safest and best for your guinea pig.
Related Guinea Pig Guides
- How to Take Care of a Guinea Pig: Beginner’s Guide
- Guinea Pig Cage Setup Guide
- Recommended Guinea Pig Equipment & Supplies
- C&C Cages for Guinea Pigs
- Best Guinea Pig Cages
- Best Hay for Guinea Pigs
- What Food Can Guinea Pigs Eat: The Full List
- Best Water Bottles for Guinea Pigs
- Best Guinea Pig Hideouts
- Best Guinea Pig Carriers
- Best Bedding for Guinea Pigs
- Guinea Pig Illnesses: The Full List
List of Sources
RSPCA — Keeping Guinea Pigs Together (companionship)
Humane World for Animals — Guinea Pig Housing Requirements (cage size)
Veterinary Partner (VIN) — Vitamin C Supplements for Guinea Pigs