Messina Wildlife's Groundhog Stopper is an effective, pleasant smelling, liquid groundhog repellent for use on all flowers, shrubs, forest and fruit trees to prevent foraging, burrowing and rubbing by groundhogs, gophers, raccoons and woodchucks. The Organic Materials Review Institute (OMRI) lists Groundhog Stopper for use by organic growers and may be used on fruits and vegetables. Groundhog Stopper is applied approximately every 30 days, regardless of weather and watering. Groundhog Stopper dries clear and odor free in about 20 minutes and will not was off after a heavy rain. Groundhog Stopper can be used around building structures, directly to burrows or even on garbage cans and storage areas to prevent animal intrusion. 100% Satisfaction Guaranteed. Great for groundhog, skunk, raccoon and woodchuck damage.