Moles

The presence of moles is hard to miss, with large piles of earth appearing on the lawn overnight. Moles dig a system of tunnels and chambers in search of food and dispose of the excavated soil on the surface of the lawn, creating unsightly molehills. 

Moles live underground and feed on a range of invertebrates in their tunnels and chambers. Moles build permanent tunnels that used by many generations, and temporary tunnels in search of food. Earthworms are the most important part of their diet; moles may consume 60% of their bodyweight in earthworks every day. They do not feed on plants; any damage is purely incidental. Moles are territorial and solitary, activity in the garden is often down to one individual. Activity is common in late winter and early spring, as males extend tunnel systems in search of females. 

Although the tunnels and molehills may be considered a pest, moles do contribute to the ecosystem of the garden, increasing aeration to improve the quality and fertility of the soil and feeding on insects and invertebrates that can be harmful to plant growth. 

While many deterrents are available, there is no scientific evidence for their effectiveness. Where mole activity is particularly disruptive and cannot be tolerated, it is best to seek the help of a professional pest service.