Do not use clay cat litter. The scent is not good for the rabbit. The wood pellets are THE BEST at odor absorption!! Hands down. I have been keeping indoor rabbits for decades and have tried all kinds of litters. The best ones available are wood pellets (NOT wood *shavings*). The pellets can be purchased at hardware stores -- they are used for burning in wood pellet stoves.
With a good litter set up using those wood pellets you will have no odor whatsoever. You will only need to change out the litter box twice per week (with two rabbits) or once per week (for one rabbit). Do not scoop rabbit litter -- it serves no benefit and just wastes time. There will be no smell if the litter box is set-up the right way - seriously!!
The link will show in detail how this works. It will also save you plenty of money on litter since the wood pellets are very inexpensive. It will end up costing about $1 per month in litter!!
The link (my website) will show you how to have an easy, odor-free, safe litter box for your rabbit.