The mats at my gym are questionably clean, as it opens at ~10am and closes at ~8 daily, and to my knowledge they do not clean them mid-day. A classmate commented that he's never seen the mats cleaned, and stated that he was beginning to break out on his knees. A few days later, the same happened to me. This was about a week ago, and despite extra soap and scrubbing, it's not getting better. Any tips or suggestions on mat induced acne on the knees? I'm thinking of buying knee sleeves but I play a very flexible game and I don't know how it'd affect my mobility.