Moles are a bother in lawns and gardens. They are not intentionally destructive to plants, but damage them during the course of their tunneling, and search for grubs and other bugs. Generally there will only be one mole in your yard that will need to be caught or scared off. This can be done in several ways depending on whether you want to harm the animal or even have to deal with it directly.
Locate the holes and tunnels the mole is using.
Put traps in place to catch the moles or kill them. If using live traps, you need a place where you can relocate the mole. Make sure it is far away from your home. Trap location will depend on the type. Some block a tunnel and force the mole to dig into it. Other traps spring as a mole is walking through an unobstructed tunnel.
Water your grass less so it is less hospitable to bugs such as grubs. Grubs live just under the surface of the lawn and make meals out of the roots of your lawn. Moles in turn are attracted to the grubs.
In a container, mix 3/4 cup of castor oil with 1 gallon of water and 1/4 cup liquid soap. This makes the basic mole repellent. In a gallon jug of water, pour 1 oz. of the basic mix. Put the lid on and shake it up. Pour the diluted mix in the tunnels and sprinkle it around the garden. Moles do not like castor oil or the castor beans from which it comes. If you don't mind taking care of them, you can plant some of these castor beans around the yard to deter moles in the future.