What kind of litter is it? My mom has a good sense of smell and never complained about unscented multi-cat litter even when we had three cats.I have 4litter boxes and use the premium clumping type. I scoop each one at least 3 times a depending how much they are used but I still can smell an odor.....help
I completely clean them every 7-8 days and after scooping I add fresh litter. But nothing seems to help the odor