Bowls and bottles should be cleaned every day and sterilised once a week.
Full clean out every week with sawdust, removing any heavily soiled bits everyday.
If you're using newspaper, a full clean out will be required every day.
We use Wood based cat litter in the Rabbits litter tray. They are reasonably priced and do a good job controlling odor. Not cedar or pine wood, as these may have ill effects and do not reduce odor. Change every 3 days.

We line all our cages with coroplast (corregated plastic). We would recommend doing the same as it makes things far easier to clean.

The process of cleaning out the cage:

Be sure to remove rabbits and toys, hideys, bowls, etc.

1. Scoop out the bedding with a dust pan into a waste bin lined with a large plastic bag or bin liner. If using fleece pull out and shake any stray poops into the bin then put in the washing machine. We use the heavily soiled baby wash cycle on our washing machine.

2. Make sure everything is out before spraying. Spray the sides and bottom of the cage with your pet safe disinfectant. Leave for 15 minutes then rinse well. If you dont have any disingfectant use a spray bottle filled with 1/2 plain, white vinegar and 1/2 water. Then just wipe clean.

3. Replace the bedding. It is wise to have atleast doubles of everything.

Have a good snuggle with your rabbits before putting them back in.

You could take this time to sit bowls in hot water to let them soak, then give them a good scrub and dry before putting them back in the cage with fresh nuggets.