Moles are insectivores (they eat insects), and they may control some insect outbreaks. However, mole activity can also cause considerable damage to lawns. This damage is usually in the form of tunnels and/or mounds in lawn that can be unsightly, disturb root systems, and provide cover or travel lanes for other small mammals.

If you are like most homeowners, you are probably confused by all of the conflicting "advice" on mole control. You may believe that every rumor, home remedy, or control method is worth trying. A common example is when homeowners try to control lawn grubs and insects to reduce mole activity. However, this is often unsuccessful because the mole’s primary food source is earthworms. Mole baits, vibrators and all the other devices sold on the market have very little effect on moles, in fact, many chemicals and home remedies (including castor oil derivatives and grub controls) are not only ineffective when dealing with moles, but they allow the animals time to establish and become real problems. Moles can quickly colonize and spread through adjacent residential properties if not handled properly. Because they need a well-established tunnel network to survive, control will be more difficult the longer they are allowed to tunnel and become habituated.

On large properties mole activity may move from one part of the lawn to another. This movement is affected by climate and ground moisture. Moles will respond to changes in food supply as different insects become available in different places and at different times throughout the year. If disturbed, moles may temporarily leave an area but will usually return when you least expect it. Even without disturbance mole activity may last only a week or two in a particular area. This here-today, gone-tomorrow behavior is probably the root of most of the misconceptions that make some home remedies and pesticides appear credible.

Moles are difficult to control since they are under the ground, and the only proven method in the past was mechanical trapping. 

Got Weeds? is using a new product, and it is the only product on the market that has proven itself effective through both lab and field efficacy studies.

The method uses medicated worms that represent an earthworm. One worm will kill a mole within 24 hour after injested.

A 5 ounce mole will consume 45-50 lbs of worms and insects each year.
Moles can dig surface tunnels at approximately 18 feet/hour.
Moles travel through existing tunnels at about 80 feet/minute.
Moles contain twice as much blood, and hemoglobin as other mammals of similar size. This allows moles to breathe more easily in underground environments with low oxygen.