Target sells a generic brand enzymatic cleaner in their pet section that usually runs $3-5 for a spray bottle. Some advice, forget spraying it! just dump it on the spots and let it soak in and air dry. Their stuff worked wonders when dummy cat decided to take the world's biggest leak in the center of our new futon mattress. No trace whatsoever of cat urine (trust me, I would have smelled it), and no repeat accidents.