So I recently got two kittens. Theyre both a little over 3 months old and their litter box is like an atomic bomb. One seems to stink more than the other. I started with a regular litter box, but even with scooping up to 4 times a day, it stank. They're kittens, so they use the litter box A LOT. The smell wouldnt be a problem if my apartment were bigger, but its a tiny 1-bedroom, and im scared the odour will start to get onto my clothes and stuff, and other people might be able to smell it when Im out. I now have a petsafe simply clean and am using Ever Clean unscented extra strength, but even with emptying the waste receptacle twice a day, my entire living room (where their litter box is) still stinks. The filled waste receptacle itself smells so bad even a skunk would pass out. I also put in a carbon pouch everytime I change the liner, but that doesn't seem to help. I keep the windows open when I can. The only time the smell got a bit better was when I put a cover on their regular litter box, but I could tell from the way they sniffed around that they could still smell it inside. And the smell wasn't that bad when I scopped as soon as they did their business, but I have a job. I obviously can't camp the litter box 24/7. Right now I have to do a complete litter change every 3 days. I dont think its a health issue because I took them to the vet when I first got them (3 weeks ago). They had a complete health check and the only thing "wrong" was that the pcr showed they had calici and the immunity test showed their vaccinations weren't that effective. The UTI/worm tests were negative. They don't pass gas or strain either. Their poop has always been solid, though the one with the stinkier poop seems to also poop bigger. It's been 2 weeks since theyve been switched to high-protein diet. The breeder used to feed royal canin kitten but I now feed them a mix of nutro/wellness/merrick. They get both wet and dry. I've had cats my whole life and got most of them as kittens, but none of them have stunk up the home this bad before. This is the kind of pungence that even weasels would have trouble topping. I can always tell when theyve jumped up on the bed after using the litter box. I should also mention Ive got two air purifiers, one of which is right next to the litter box. I've tried corn and another clumping clay litter previously. Is there a spray or something I can use? A friend mention that hotels have a special spray that dissolves smells within an hour, but she didn't know the brand. Should I just get a covered litter maid? But I don't want to just trap the odour inside, and I'm worried it'll still stink every time the litter maid opens the waste receptacle to dump the waste.