Our 1/2" Button Top Stall Mat Kits are not ribbed but feature a button top pattern on the surface. This makes these mats very slip resistant whether wet or dry. These mats can be used in a garage where a car would park on them. The only thing that may occur would be some breakdown of the mats due to oil from the car hitting the flooring. These tiles would be very easy to clean. You can sweep any large dirt and debris with a broom, and any stuck on dirt and debris can be hosed off with a water hose.