The warm dent in a mattress is not, by itself, a hygiene scandal. You are sharing sheets, not signing up for an infection. The exposure calculus changes when a cat carries fleas, intestinal parasites, or litter residue, especially if its paws travel from box to pillow without a barrier.The litter box is usually the weak link. Clean hands matter. Fecal-oral transmission is how organisms such as Tox...More