A. I think the easiest way would be to change either the position or the type of box or litter tray. Ideally a litter without a strong scent should be preferred. Litter should be cleaned regularly as cats are fastidious creatures! Hoods covering the litter box could be an idea, even though not all cats like it.
Locate the box in a quiet and undisturbed location, away from noises. Try eventually to have more than one box especially if you have more than one cat.
Your cat may defecate outside the box for other problems not related to behaviour and in that case a consultation with your veterinarian may be worthy.
Normal house cleaning products should be enough to get rid of the feces smell.
A. Try different types and brands of litter. Your cat may prefer one to another. You can also try litterbox attractants (search www.pet360.com for options) as well as covered and uncovered litterboxes to determine your cat's preference. If your cat is stressed or feeling anxiety, try to determine and reduce or eliminate the offending stimulus. If that isn't possible, calming pheromone collars or sprays may be effective. An enzymatic cleaner such as Nature's Miracle will help with the odor. If you have multiple cats, the general rule of thumb is to have a litterbox for each cat in the house plus an additional litterbox.
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