Mole and Gopher Repellent Granules for Lawn Garden Yard Outdoor Pest Control Rodent Repellent, 6 LB, The Natural Way to Repel Burrowing Animals 1. HOW LONG DOES IT LAST ONCE APPLIED?  In general, the Mole & Gopher repellent granules remain effective for 2-3 months after application. Under normal conditions, Chase Mole granules will go to work right after you apply them and within a few days your yard will be free of these nuisance critters for several months. 2. HOW DOES IT WORK?   The ingredients simply smell, taste, and feel bad to burrowing critters, which repels them from the Area, instead of killing. 3. CAN IT DAMAGE MY LAWN OR GARDEN?   No. The product has been used in many applications and has never done any harm to lawns or other plantings. 4.  WILL IT WORK ON BURROWING PESTS?   User experiences indicate that the granules will reduce the infestation of various burrowing animals. Many customers report success driving away armadillos with the produc 5. WHAT IS THE SHELF-LIFE OF THE PRODUCT?   The castor oil granules can be stored in a cool, dry location for several years. They will remain effective as long as they arent frozen of stored in super-hot conditions.