I just bought a house with an 8 stall barn for my two horses. I dont think there has been a horse stalled there in about a year. I would like to clean the stalls before moving them home with me due to the fear of secondary grain. The place is pretty clean, but i just want to be safe. The barn has a concrete floor and the 2 stalls i will be using have rubber mats in them. What do i use to clean the stalls with before putting my bedding down? Any help would be greatly appreciated. Thanks.