I live in the city and they have been salting the sidewalks like crazy. I think it's making his paws irritated. After a long walk, he lifts one of his legs and wants to lick the paw. I heard that salt can sting

! I don't want to put booties on him because he refuses to walk in shoes. Are there any creams or gels that can be used as a protectant? Does anyone have a product recommendation?
Thanks!