My "problem" is that I leave my mat in the studio I practice most of the time - I sometimes take it home and clean it in my shower but I can't do that all the time so the mat spray works perfect for me. Also for the studio mats in the surfnyoga house it is great because we can't clean them in the shower after every time they are used... I will read your last yoga post today or tomorow. Thank you for reminding me.