How to Set Up a Guinea Pig Cage: C&C, Bedding & Accessories

I built Popcorn and Peanut’s first cage myself, and it was a disaster. I bought a pet store cage with a wire floor because the box said “guinea pig” right on the front — and I figured the people who made the box probably knew what they were doing. By day two, Popcorn’s foot was caught between the bars. By day three, the whole thing reeked because the plastic tray underneath was barely an inch deep. I had two stressed pigs in a cage that was less than half the size they needed, and I didn’t know any of it until I started reading.

TL;DR: Build a C&C cage (coroplast + grid cubes). Minimum 8 sq ft for 2 pigs, 10.5 sq ft recommended. Use fleece or paper bedding. Avoid wire-bottom cages, pine/cedar bedding, and small pet store cages. Provide hideys, tunnels, and a hay rack. Never house alone — guinea pigs need companions.

Guinea pigs need floor space, not height. They don’t climb or jump like ferrets or chinchillas. A tall, multi-level cage with ramps is wasted on them. They need room to run laps, popcorn, and establish separate areas for eating, sleeping, and using the bathroom.

The C&C cage is the gold standard

C&C stands for “cube and coroplast.” You buy a set of wire grid cubes (the kind used for storage shelving) and a sheet of coroplast (corrugated plastic). You cut the coroplast to form a solid, waterproof base, and zip-tie the grids around it to form the walls.

The minimum for two guinea pigs is 8 square feet (about 2x3 grids). The recommended size is 10.5 square feet (2x4 grids). For three or more pigs, go bigger. There’s no such thing as too much space for a guinea pig. Not sure what your pig count needs? Try our cage size calculator →

You can buy C&C cage kits online from specialty pet stores, or source the materials yourself for about half the price. The grids cost roughly $20, and a 4x8 sheet of coroplast runs about $15 at a sign supply shop. Total cost: around $40-50.

Fleece versus paper bedding

Your two main bedding options each come with trade-offs:

Fleece liners:

• High upfront cost but cheaper long-term.
• You need to spot-clean daily and wash the liners in the washing machine every 4-5 days.
• Guinea pigs love the soft texture, and fleece doesn’t stick to their feet.
• You need an absorbent layer underneath (U-Haul furniture pads or towel layers), since fleece wicks moisture through rather than absorbing it.

Paper-based bedding:

• Easy to use — just dump and replace.
• More expensive monthly if you have a large cage.
• Dust can be an issue with cheaper brands.
• Great for burrowing if you pile it deep enough.

I use fleece liners now and I’ll never go back. The initial investment was about $60 for enough liners to rotate, but my monthly bedding costs dropped to zero. My pigs also seem to prefer the solid surface under their feet.

Essential cage accessories

Once you have the cage and bedding sorted, you need a few essentials:

• Two of everything — two water bottles, two food bowls, two hideys. Guinea pigs can be territorial about resources, and having doubles prevents squabbles. Space them far apart in the cage.
• At least two hideys — one per pig as a minimum. They need places to retreat when they feel scared. Tunnels, fleece forests, and wooden houses all work.
• A hay rack or hay area — hay should be available 24/7. A hay rack keeps it off the bedding and prevents waste. Some people designate a corner of the cage as the hay zone with a low-sided box.
• Heavy ceramic bowls — for pellets and veggies. Light plastic bowls get flipped instantly.
• Floor time pen — a pop-up playpen for supervised out-of-cage exercise. Guinea pigs need at least an hour of floor time daily.

Where to put the cage

Where you put the cage is almost as important as the cage itself. Guinea pigs are sensitive to temperature, drafts, and noise. Place the cage:

• In a room that stays between 65-75°F (18-24°C) consistently.
• Away from windows, air conditioning vents, and exterior doors.
• Off the floor on a sturdy table or stand (guinea pigs feel safer higher up).
• In a room where the family spends time — they’re social animals that want to be near you.

When I saw my pigs popcorn across the new C&C cage — full-speed zoomies with joyful leaps — I knew I’d done something right. A proper cage isn’t an expense. It’s the foundation of their health and happiness. Also be sure to read our guides on what guinea pigs eat and why they make great pets.