Little can be done to prevent moles from attacking your lawns; all that can be done is to exterminate the problem once they have appeared. However it is common knowledge that moles are extremely difficult to catch, their complex underground mazes make for excellent protection. They are very good at detecting smells & vibrations. When a mole detects danger they make a hasty retreat into the safety of deeper runs, blocking the tunnel behind them as they travel. Control of moles is carried out using a variety of barrel & scissor traps. Trapping is the most effective method of removing young, inexperienced moles, best carried out between October & April when moles are at their most active. It is important not to introduce any new foreign scents when setting a trap. Traps will need checking daily. DIY efforts such as putting broken glass into the tunnels are ineffectual & can actually cause more damage as the mole will dig around the disturbance.