Oh god, I am almost certain I’ve had some dried residue on my hair and scalp when friends with pets have come over! The dogs are always so friendly and full of licks and smooches that I’m genuinely shocked I never thought of the residue itself, never realized it’s actually fatal! How long does the minoxidil itself last, or whatever the active compound is, that is dangerous, vs. the alcohol and others in the topical that might leave residue? No dogs or cats have died so far or been sick after visiting, but for future, I will eventually run out of luck, so better see if you’d know more, and if I have to always shower and shampoo the full scalp before any pets come by from now on 😟