his is the Gilmour hose-end sprayer. It is recommended to apply insecticide (especially termiticide) to soil in the excavated trench around the structure you are placing a barrier for termite protection. This device is a must to put the correct amount of material out when treating This device is a must for applying metered (measured) concentrate in the trench while building your chemical barrier. Gilmour Adjustable dosage, hose-end sprayer for dispersing insecticides and fungicides.