I cant shout and dance enough about woodbased cat litter. Its a saviour. It smells like pine and is naturally antibacterial or boosted with antibacterial stuff (safe for cats) I have used it for years. I have used clay as a last resort way back and it cant cope right from the 1st kitty visit. Do yourselves a favour and switch over to it. Im in a househare and no way would I have anything than woodbased or my landlord may be having a word. You will save a lot of time and whiffs as you dont need to change every day. I just remove the offending bits with tissue/ scoop and flush. Oh and the white crystal stuff is even less effective.