That's the only issue I have with them. They look awesome and clean up a lot better than untreated concrete. I walked into my great uncles garage one time after a morning duck shoot, the floor was wet from the rain blowing in the roll up door opening. I had on rubber boot-foot waders and held up my ducks with a big smile and slipped like a cartoon character (running in place). I landed right on my tail bone, in order to not drop my shotgun. Thought I broke my $h!t for sure. Just bruised tailbone and pride.

There is some that has sprinkles that supposedly add traction.