Collembola
Pest description and damage A small insect approximately 0.125 inch or less long; can be gray, pink, blue, or black. They often are found in large numbers in moist situations.
Management
Eliminate moist breeding areas inside the house. Inspect home to make sure there are no plumbing leaks. Eliminate moisture, especially excessively moist conditions under the building. Remove leaves, mulch, etc., from around foundation. In some cases it is necessary to have the interior of the home treated in conjunction with eliminating excessively moist conditions.