Check the listing for details. Termite Plugs- 500 ct. for 3/8" drill holes to support cement patch. Condition: New. Listed at 12.00 USD. For 3/8" drilled holes These Plugs WILL NOT fall through holes. Order the same size of hole you drill BECAUSE PLUGS ARE over sized for this use. You may be using a poly plug but not The Poly Plug by Pest Boys. If you're using a plastic or rubber plug, you are using some of the most expensive plugs you can buy just to cover them with patching materials. The Poly Plug by Pest Boys is the most economical material which is a foam plug that is significantly cheaper to purchase, faster, and much easier to install than the competitions products. U.S. PATENT No. 9,986,728 B2 POLY PLUGS are Faster, Cheaper, and Easier to use. POLY PLUGS are used so you don't have plastic plugs showing which alert people a structure has had termites. Technicians with a T-Handle Tool can install 15-20 per minute. This package does not contain a T-Handle Tool. The plugs are used with concrete patch materials to seal termite treatment holes drilled in slabs, block, and masonry holes. After pesticide injection, the technician inserts a POLY PLUG in the hole. A good cement patch mix, and the holes can be almost undetectable. Countersinks it with the T-Handle Tool, and seals it with patch material. Poly Plugs are available for drill holes of 3/8, ½,9/16 and 5/8 inches and are packaged in 500 count bags. If you drill 9/16" holes, you want 9/16" Poly Plugs. Poly Plugs are part of the Patented “Termiticide Flex Plug System and Method”.