Moles create tunnels that can harm plants' roots and look unsightly. Lawns are a favorite habitat for moles because earthworms are this insectivore's favorite food and live in grassy areas in abundance. Many folk remedies exist that people claim to be effective in either killing or driving moles away---from putting razor blades, human hair or bleach into their runways. However, these remedies may not prove effective. The best control method is to trap moles, according to the University of Ohio.
Keep your lawn mowed closely and remove mulch or other ground cover in beds where you grow bulbs. This will make a less attractive habitat for moles.
Place one trap into each active surface burrow in spring and fall, especially after it rains. Check traps every day and carefully dispose of dead moles.
Apply the repellent Thiram in areas where you grow bulbs, as directed on the package.
Sprinkling 1 tsp. of a mole product containing zinc phosphate into mole tunnels or on top of their mounds.
Hire a professional exterminator if your mole invasion is severe. They will use fumigants that are approved for use only by certified applicators.