Quick Mole Facts:

• Solitary, one mole to the burrow system.
• Insectivores-moles eat worms, grubs, etc.
• Damage crops and turf by up rooting plants.
• Mounds and raised burrow areas can cause machinery damage and are unsightly in landscaping.
• Build two tiered burrow systems. A subsurface burrow is used for feeding and a lower burrow, laterals, from six to twelve inches deep is used to connect feeding burrows and waste dirt mounds.

Additional Mole Information:

Ohio State University

Mole Treatment with PERC:

• Successful treatment demands that laterals are probed and filled with carbon monoxide.
• Subsurface feeding burrows will not hold a high enough concentration of the fumigant gas to kill the mole.
• Treat fresh digging only. Moles reuse lateral burrows, but they are also continually digging new burrows.
• Persistence and multiple probes of the same burrow complex result in high levels of success.

Quick Vole (Field Mice) Facts:

• The names vole and field mice are used for basically the same mouse. Different locals use either one or the other or both (my experience).
• Voles live in colonies and can explode to very dense populations under favorable conditions.
• They eat green surface vegetation (for the most part) and can eliminate any growth within a colony.
• They have multiple holes within the colony that are kept open and may or may not be connected underground.
• Voles or field mice will establish new colonies and under favorable conditions, adjacent colonies will expand till they overlap.

Additional Vole (Meadow Mice or Field Mice) Information:

UC Davis

University of Nebraska Vole Handbook

Vole (Meadow Mice or Field Mice) Treatment with PERC:

• Though multi acreage treatment has not been done, individual colony treatment has proven successful.
• Voles are very susceptible to carbon monoxide.
• As many holes as possible within a colony should be fumigated; at the same time if possible.
• Holes do not need be sealed off. The sensitivity of the animal to CO and its heavier than air property works in the applicator's favor.

The Internet Center for Wildlife Damage Management