This may be the biggest source of cat smell in your home, so turn your attention here first.
Scoop the litter boxes daily, if not more often. And, of course, get the waste out of your house! Scoop the hard bits and discard in a plastic bag. Knot the end so that smells do not escape. Place in the outside garbage bin.
Use unscented litter. Like air fresheners, scented litters only “mask” smells. Plus, lots of cats are turned off by scented litters and may choose another location for bathroom purposes. That will definitely make your house stink!
Sprinkle baking soda in the bottom of the litter box. Many people swear by this method to help minimize odours.
Change the litter frequently. Experts recommend a couple of times a month. Also, each time you change the litter, wash out the box with mild soap and water.
Article adapted from Catster.