The present application includes a system configured to simplify the application of plugs into holes created in concrete slabs during a termiticide treatment process. The system includes a flexible plug for insertion into the hole one or more times. A plug tip is coupled to a tool and selectively adjusted to a particular depth. A locating element is included to prevent the over protruding of the plug tip in the hole. The tool is used by the user to insert the plug tip into the hole wherein the depth is governed by the location of the locating element. The plug tips may be interchanged or adjusted in depth along with the locating element. Once the plug has been located properly, a patch is then applied to the remaining hole.