My daughter wears toddler crocs all the time! She goes through mud, puddles, dirt, eveything a little girl gets into. To clean them, I wash then in the sink with the dishes or dish washer. They come out perfectly clean. The tread wears very well. She grows out of them before they wear out. I pass them on to other kids at daycare to wear. She wears them with or without socks, no blisters. I'm a big fan! Will buy again and again!