Plug and patch holes four times faster. As seen on YouTube, now your technicians can plug and patch termite treatment drill holes up to four times faster at half the cost of traditional materials. POLY PLUGS by Pest Boys are a foam material which is much cheaper than plastic, cork, and rubber materials. It is used with concrete patch materials to seal 3/8, 1/2, 9/16, and 5/8 diameter treatment holes drilled in slabs, block and masonry. An optional adjustable installation tool is available that instantly countersinks the plugs to a consistent depth, further reducing labor for the sealing process. In addition, the optional tool can be used with plastic, cork, and rubber plugs as well.