(Fortunately? ) Where I live it is so cold there is hardly ever any salt used, just sand. And the sidewalks are just tamped down snow. I do not use booties if the temp is above -10 C. But if it is colder Miss Tallulah will lift her paws because it is too cold for her feet. So she has a sheepskin lined parka and booties. Size medium from Petland. They have a sock like top and a waterproof shell with a suede bottom for gripping the snow. They fasten with Velcro that you wrap around the top of the boot just before the sock part. They stay on pretty well but I still look down to check and make sure one has not come off which happened once- I did not make the one that came off snug enough. She squirms and she makes it difficult to put the front ones on and just after I put them on she walks really bizarre - like a wooden Bulldog. But as soon as she is outside she forgets they are on and walks just fine.