Leaf Sweep Combo Covers are designed to work great dry or with liquid solutions for cleaning, pest treatment, and prevention. Simply spray leaves or wet covers directly. Covers are engineered to quickly and effectively swipe, scrub, and treat your plants without worrying about leaf damage. The soft loop microfiber is easy on delicate leaves, but textured for tough buildup. Wash or swap out when dirty or after treating a diseased plant. Refill includes 2 pair of Combo Covers.