Floors are a big deal. Especially if you have babies crawling all over them. Honestly, they just gross me out. Especially if you wear your shoes in the house. Think about it. You go all over the world with those shoes. In and out of public places and restrooms. Places with feces, urine, and things we don't even want to think about. Just because you can't see it now doesn't mean it wasn't there leaving its nasty residue. Then it's on your shoe, traveling home. If you don't take them off, your floors and carpets are disgusting. I'm not sure about you, but the very last thing I want on my floors, where I walk around barefoot and my kids roll around, is someone else's urine from the floor of the department store bathroom. Don't go in those places? Too bad for you... because everyone else did and tracked it all over the store, you STILL have it on the bottom of your shoe. Have I said eeeeeeewwwww yet?