Messina Wildlife's Groundhog Stopper Qt. Ready-To-Use Trigger Bottle is an effective, pleasant smelling, liquid groundhog repellent for use on all flowers, shrubs, forest and fruit trees to prevent foraging and burrowing by groundhogs, gophers, raccoons and woodchucks. Groundhog Stopper is listed by the Organic Materials Review Institute (OMRI) 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 wash 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 Guarantee. Works by smell and taste and will not wash off after a heavy rain. Lasts for approximately 30 days. Great for groundhog, skunk, raccoon and woodchuck damage. Available in Ready-to-Use only.