After finding the active runway, level the ridge as in Fig. The prongs should be poised about an inch above the original runway. Raise and release the prongs several times before adjusting trigger so that earth will not prevent full trap action. Inspect traps after a rain. If the soil has washed away, leaving a space beneath a trap trigger, insert a chip or flat stone in this space to ensure quick trigger action or reset the trap.
Baits containing toxicants for the reduction of mole populations are also available commercially.
Complete instructions for their use are included on the labels. Since moles feed heavily on grubworms, the elimination of the grubs will generally decrease mole activity in a lawn. Grubworms can be controlled either with chemicals or with milky spore disease, a relatively harmless biological control agent. Read the label for more specific instructions, precautions and suggestions. After treatment with any of these insecticides, soak the lawn surface thoroughly.