Let your ecoYoga mat breathe as much as possible, especially if you work a sweat on to it. Wiping down with a damp cloth before and after class is good practice. The mats wash well in the washing machine through a cool cycle using a small amount of detergent if really dirty. They will retain a lot of water. Remove excess amounts by rolling up with a dry towel - the old traditional woollens method! Dry flat to avoid creasing (though these will eventually smooth out). Do not tumble dry. Avoid contact with oils and store out of direct sunlight as both these will aid degradation of the rubber.