I lost a customer a few years back, because her veterinarian told her that her dog would get kidney damage from fertilizer salts absorbed through the pads on her paws. Synthetic ferts are basically salts. I understand the vets basic scientific argument, but I disagree with it. Anyway, customer is happier with applying some organic stuff herself. She's a very nice lady with two terrific dogs. We parted ways amicably, and she emails me occasionally with questions she may have. Ran into the lady a few days ago, she tells me about this WONDERFUL ice melt product her vet is selling. Perfectly safe for animals. Won't hurt them at all. Found a jug of it. It's Urea pellets. 100% UREA.