Move the mice together, with their smell
A mouse deep-clean begins by moving the whole group into a secure holding cage containing a scoop of their used bedding, a hide, and water. Mice organise their social lives through scent, and females in particular settle far better when the holding space smells like the group. Work efficiently once they are out, because mice stress in bare, exposed spaces, and never hold them in an open-topped container: a startled mouse can clear a surprising height. With the colony relocated, empty the main enclosure completely, tipping all substrate out and checking corners, where mice concentrate urine and where the smell of a mouse cage truly lives.
Strip out the climbing gear and inspect it
Remove every shelf, rope, ladder, hammock, tunnel, and toy from the mouse enclosure for individual cleaning. Porous wooden items that have absorbed urine over weeks cannot be rinsed back to clean and should be replaced; a mouse enclosure's wooden furniture is best treated as a rotating consumable. Cardboard tubes and boxes go straight into the recycling and get replaced fresh, which the mice will treat as a construction project. Wash plastic, ceramic, and metal items, including the wheel's running surface and the water bottle and its spout, where biofilm builds. Check hammocks and fleece items for chewed holes and loose threads before washing them in unscented detergent.
Wash with a mouse's nose in mind
Scrub the empty mouse enclosure, base, bars, and shelves with hot water and a little plain washing-up liquid, using diluted white vinegar on the urine-heavy corners, then rinse until the surfaces smell of nothing. A mouse's sense of smell is her primary sense, vastly more sensitive than ours, so phenol-based disinfectants, bleach sprays, and perfumed cleaners are both unsafe and genuinely distressing in her living space. Dry the enclosure completely before rebuilding, since damp substrate under deep bedding turns sour quickly in a warm room and undoes the point of the clean within days.
Rebuild busy, and keep a thread of the old scent
Layer fresh substrate into the mouse enclosure deep enough for burrowing, mix through a small handful of the cleanest old bedding, and rebuild the interior with more cover than feels tidy: hides at floor level, ropes and branches for climbing, tunnels, and scattered nesting material. A busy layout is not decoration for mice; cover is safety, and a group returned to a bare cage will huddle and over-mark instead of settling. That retained pinch of old bedding matters because a completely scentless home reads as foreign territory, prompting a stressful marking frenzy, whereas a familiar thread of group scent lets the mice file the clean cage under home.
Weekly rhythm and mouse checks
Most mouse enclosures need a full deep-clean weekly, since mice produce strong-smelling urine continuously, with the worst corners spot-cleaned in between. While the group is in the holding cage, look each mouse over briefly: sneezing fits, wheezy or clicking breathing, hunched posture, or a scruffy, unkempt coat in a mouse should be raised with a veterinarian, as respiratory trouble spreads quickly through a group. Replace any wheel that wobbles or squeaks into their running hours. KinsLe Care Teams turns your mice's deep-clean into an assigned recurring duty with a timestamped finish, so the weekly reset keeps pace with the mice.