The power of Suspend has now improved! Suspend Polyzone features a proprietary polymer layer that protects the active ingredient from weather, irrigation and mechanical abrasion. This controlled release formulation, which resists erosion, ensures your treatment will continue to control targeted pests for up to 90 days outdoors. It also stays right where you put it, so if you want to increase the effectiveness of your treatments, put the science of Suspend Polyzone to work for you.