Guinea pigs are productive little animals: they graze, drink, and toilet almost continuously, so their cage needs two different rhythms of cleaning. Spot-clean every day, and do a complete clean once a week. If the cage smells of ammonia when you lean in, one of those rhythms has slipped — a well-kept guinea pig cage smells mostly of hay.
The Daily Spot-Clean: Five to Ten Minutes
Once a day, remove the wettest, dirtiest patches: soaked bedding under the water bottle and in favourite toilet corners, flattened soiled hay, and any uneaten vegetables from the day before, which wilt and attract flies. Top up those areas with fresh bedding, shake out and replenish the hay rack or pile, and rinse and refill the water bottle rather than just topping it up, since the spout slimes over quickly. Pick up scattered droppings on fleece liners if you use them, and give hideys a quick shake-out. This short daily pass is what keeps moisture and smell from ever building a foothold.
The Weekly Full Clean
Once a week, move the guinea pigs to a secure playpen or carrier with hay and a hidey — never leave them loose while you work. Strip out all the bedding, scrape and wipe the cage base and corners where urine scale builds up, and wash food bowls and the bottle properly. Let the base dry fully before adding fresh bedding, because bedding laid on a damp base turns soggy within days. Replace cardboard hideys that are urine-soaked, and check wooden ones for chewing damage and splinters.
Adjust the weekly rhythm to your setup rather than treating it as a law. A pair in a generously sized cage may stay fresh the full week; three or more pigs, a smaller cage, or warm weather can mean a full clean every four to five days instead. Fleece liners usually need changing and washing two or three times a week, with daily sweeping between changes. Elderly or unwell guinea pigs who move less and toilet in one sleeping spot often need that corner refreshed twice daily.
Signs You Are Cleaning Too Little — or Too Harshly
Too little cleaning shows up as a sharp ammonia smell, damp bedding clinging to feet, hay that pigs refuse, and more flies around the cage. Watch the pigs themselves, too: sore or reddened feet, sneezing in a dusty or ammonia-heavy cage, and reluctance to settle are all prompts to clean more often and mention at a vet visit if they persist. Too harsh is the opposite trap — strong-smelling disinfectants and scented bedding irritate guinea pig airways, so use plain, pet-safe cleaning methods, rinse well, and air-dry. Never clean around the pigs with sprays while they are still in the cage.
Dividing the daily spot-clean, the bottle wash, and the weekly full clean between family members in KinsLe's Care Teams, with each finished job timestamped, keeps a guinea pig's home on its two rhythms without one person carrying the whole routine.