Messina Wildlife CA-U-016 Cat Stopper Trigger Bottle, 32 oz., Organic, Red CAT STOPPER is a effective, pleasant smelling, liquid cat repellent for use on all flowers, shrubs, turf and other areas cats use to bed down or leave their droppings. Cat Stopper dries clear and odor free in about 20 minutes. Last for 30 Days Works by smell and taste and will not wash off after a heavy rain. Ready-to-Use with Spray Bottle