Neighbours complain about rabbits because of the smell, but the smell is not really the rabbits. It is ammonia from urine. Once you understand how it forms, you can keep a shed close to odourless even on a small plot.
Where the smell comes from
Rabbit urine contains urea. When urine sits in wet bedding, wood, concrete or a puddle, bacteria turn that urea into ammonia gas. Dry droppings on their own barely smell. It is the wet mix of urine, manure and bedding that does.
Ammonia is more than unpleasant:
- Rabbits are sensitive to it. A Russian veterinary source puts the safe level below 10 mg/m³ and says 20 mg/m³ already makes rabbits ill, mainly in the airways.
- People smell ammonia long before it reaches harmful levels. That makes a useful early warning, but it also means your neighbours will notice a badly kept shed well before your rabbits get sick.
- A sharp smell, condensation on the walls or humidity above about 75% means the shed is too closed up or waste is sitting too long.
So the whole strategy comes down to one thing: never let urine sit in a wet mass. Separate it, drain it away, and remove it before it ferments.
Option 1: trays under the cages
A removable metal or plastic tray goes under a mesh or slatted floor. With a slope of about 5°, urine runs to one point and the droppings stay drier.
- Empty trays every 1–4 days, depending on the number of rabbits and the tray size. Trays under growers fill fastest.
- A thin layer of sawdust or rice husk in the tray, both sold in Uzbekistan, soaks up urine.
- Trays work well when emptied on schedule and badly when neglected. This is the most labour-hungry option.
- The Zolotukhin cage, with most of its floor solid and sloped and a mesh strip at the back, is a variant that keeps most of the floor dry.
Option 2: a worm bed under the cages
- Cages sit at least 0.9 m above a bed of composting worms (red wigglers, Eisenia fetida). Droppings fall through and the worms process them. People who use this system report that the smell almost disappears once the worms are established.
- The catch is urine. Too much of it drenches the bed and kills the worms, so divert part of it with a sloped strip or gutter into a separate spot filled with absorbent material.
- Protect the worms from summer heat and winter frost.
- Set up properly, this is the option with the least daily work and the best smell control.
Option 3: deep litter, with care
- At least 20 cm of straw or shavings, topped up regularly. Kept dry and airy, it composts with little smell.
- Once it gets wet, it becomes a source of ammonia and disease. In one study rabbits on straw grew more slowly than rabbits on wire.
- Not recommended for beginners keeping rabbits in cages.
Ventilation carries away the rest
- Even a clean shed needs air exchange. Commercial guidance is 4–8 air changes an hour in winter and 20–30 in summer.
- Fit the exhaust fan on the side facing away from your house and the neighbours.
- Do not keep rabbits in a basement under your home. Ammonia and damp collect right beneath the rooms your family lives in.
Flies and rodents
- Fresh rabbit droppings are too dry for flies to breed in. Flies breed in manure that has been wetted by urine, spilled water or rain, mostly in manure less than a week old.
- Keep manure dry, and spread it thinly or compost it so it dries quickly.
- Store feed in rodent-proof containers. Raised cages also keep feed off the floor.
Manure is an asset
- Rabbit manure is a "cold" manure. It can go straight onto garden beds without composting and will not burn plants.
- Fresh, it contains roughly 2% nitrogen, 1% phosphorus and 1% potassium. Agricultural extension sources put that at about four times the nutrients of cow or horse manure and twice those of chicken manure.
- Ways to use it: straight onto beds, composted half and half with dry bedding, or run through a worm bed to make worm castings, which are worth more.
- Who buys it: gardeners, greenhouse growers and people with vegetable plots. One of the largest rabbit companies in Uzbekistan has built a fertiliser line around rabbit manure. Local prices have not been researched, so ask around before counting on income. If you are registered as a dehqon farm, ask the tax office whether manure counts as your own agricultural produce.
Daily and weekly routine
- Every day: remove wet bedding and spilled feed, and look at the trays under nursing does and growers.
- Every 1–4 days: empty trays and add a fresh absorbent layer.
- Every week: wash trays, check drinkers for leaks and check the moisture of the worm bed.
- After disinfecting with a chlorine product, air the shed and let everything dry completely before rabbits go back in. Chlorine fumes damage their lungs.
Common mistake: Hiding the smell by throwing fresh straw over wet waste instead of removing the urine. The wet layer underneath keeps giving off ammonia, the smell is back within a day, and the rabbits breathe it all night.
