my husband empties about half of the box of litter into the litter box. I tell him I don't think it's a good idea, I constantly smell the ammonia from the box, even though we clean it every day. We have 2 cats. I find by adding to much litter the urine might get trapped way down below where we don't see it but can smell it. I can smell it but he doesn't. He has no problem with using half of the box, saves time, he says. Pet's info: Cat | Domestic Longhair | Male | neutered | 9 years and 10 months old | 25 lbs

It may be the litter you are using that is reacting to your cats urine smell. However you should always scrape the bottom of the litterbox to ensure you get all the urine out of the box. When filling the litterbox you are usually ok with filling it to 3-4 inches of litter. Also, if your cats are tolerant to it, you can put in litter liners that will coat the bottom of the litterbox and prevent any sticking at the bottom. I hope this helps and if you still feel like you are smelling a bad odor, I would consider having the cats checked for a urinary tract infection. Pay attention to how often each cat urinates and drink water to determine which is likely to have an issue. Best wishes with your cats moving forward. Take care.