I installed Magic Blue, but the litter box still smells?
Magic Blue is most effective in hooded litter boxes, combined with sensible litter box hygiene. In short, you will get better results if you scoop and clean the litter box on a regular basis. And when you find the foul odors still persist, you may want to try changing your cat’s diet, because what goes in will naturally affect what comes out. You could even try replacing the litter box altogether, as the plastic tends to absorb foul odors over time.