Specifications include, but are not limited to: B. Contractor shall perform Pest and Vermin Control Services bi-weekly, (every other week), during the term of the contract, to maintain adequate and proper vermin and pest control. C. Pest Control Service: Contractor agrees to treat premises bi-weekly for the following pests such as, mites, silverfish, earwigs, sow bugs, centipedes, bees, wasps, millipedes, ants, spiders, cockroaches, scorpions, fleas, silverfish, and all other pests (excluding termites). E. Vermin Control Service: Contractor agrees to treat premises bi-weekly, (every other week), vermin control of gophers, mice, rats, ground squirrels, and any other vermin outside up to a distance of 100 feet away from the buildings and within the buildings to be serviced. Contractor agrees to use non-chemical or biological odorless or low odor type treatment. If this treatment is not effective, Contractor shall move to the use of Tier 3 (least hazardous) herbicides/insecticides and then progress to Tier 2 and then to Tier 1 if necessary, to manage pests. Contractor is responsible for adhering to this process and ensuring that they are using the most current tier-rated herbicides/insecticides.