Chase Liquid Mole & Gopher Repellent - Gallon - 10513AChase Liquid Mole & Gopher Repellent is a biodegradable, environmentally friendly liquid repellent that will help eliminate burrowing pests from lawns and gardens. You can use this product from spring (when tunnels and cone shaped mounds first appear) all the way through to late fall. Chase will not kill the target animals; but when they come in contact with it, it can cause topical itching and when they ingest it they'll experience digestive upset.