The best way to keep your rabbit hutch odor-free is to clean it at least a couple of times a week. If you let the hutch go for a week or more without cleaning, the odor can become unbearable. If you've waited that long and need an emergency intervention, move the rabbits to a different enclosure so you can do a deep cleaning.
Throw away any soiled or wet bedding material in the hutch. New, clean bedding can be saved in a bag and returned to the hutch after cleaning -- keep in mind if the bedding smells, so will the hutch, even after cleaning it.
Wash any bowls, containers or other items in the hutch. Use a small drop of dish detergent and warm water. Rinse well to make sure there's no soap residue, which can harm the rabbits. Let air dry while you continue cleaning.
Use a knife or paint scrapper to remove any dried feces or urine marks stuck to the sides or bottom of the cage. If you're having difficulty removing the residue, buy a pet-safe deodorizer or cleaning product from your local pet store. Mix the cleaning product with warm water according to label instructions and place it in a squirt bottle. Then squirt some liquid on top of the dried feces or urine and let stand for 10 minutes or so. This will help soften the areas so you can scrape residues more easily.
Use a hose to rinse the whole hutch. This will get rid of any loose residue, small pieces of soiled bedding and other items that could be retaining odors. The hutch won't be properly deodorize until every bit of old bedding and feces and urine are gone, so this is a must-do step.
Use an odor remover or disinfectant to scrub the entire hutch if hosing the place down is not enough to remove the odor. You also can use white vinegar if you don't want to buy commercial products. Rinse again after scrubbing so there's no soapy residue left behind. Wait until the hutch is dry before replacing the bedding and putting your rabbits back into the hutch.
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