Mole Scram repels moles and alters their environment in three ways: 1. The castor oil coats worms, grubs and bugs, making food both unpleasant to taste and uncomfortable to digest. 2. All active ingredients make mole tunnels and surrounding soil bad smelling. 3. Lastly, the garlic and citronella oil in Mole Scram reduce insect activity food availability in treated areas. These changes to the mole's environment drive them out of the application area without harm to the animals, pets or children. Moles may burrow underground up to 5 ft to avoid the repelling action. As a result, you may have to reapply in the summer and fall if heavy rainfalls occur and bring earthworms to the surface. Watering or rainfall is the key to activation as it draws the active oils from the granules into the soil. This action rapidly begins the repelling process.
From the manufacturer:
Mole Scram is a dual-action granular mole repellent, which is specially formulated to quickly drive moles away from your lawn and garden. Mole Scram works by combining taste that moles dislike as well as a strong odor that is very mild to people but offensive to moles. Our mole repellent does not kill or harm moles, it simply drives them away so that they will do no farther damage to your property. Mole Scram is all-natural, organic, and fully biodegradable.