I purchased these plugs because I noticed that some of mine were missing. I live in the South and have the house treated yearly for Formosans. They new plugs arrived quickly but I was disappointed to discover they are made of hard plastic instead of rubber as I had assumed. Therefore, they do not provide a snug fit. Moisture can still get in and they pop out easily (probably why the originals went missing in the first place). Not all of the holes are exactly the same size either. (I actually purchased two sizes.) A few holes are between the 3/8 and 1/2 inch sizes, and were they made of a flexible material, the larger plugs would have fit.
I plugged a hole that a woodborer bee had chewed out on a wooden beam. I few hours later the woodborer was back trying to chew up the plug it died doing this. Probably did not taste good.
When installing these plugs I fill them with glue that expands while drying.
When I ordered the Bee kit and extra plugs for the holes the lady said do you want 1/2 in.or 3/8 plugs? I said how should I know! She told me most people buy the 1/2 in. ones When I received the package, they were way too BIG. It cost me around $8.00 to send them back. I wasn`t very happy about that. They are the ones who recommended me the wrong size to buy. Not really very good customer service to have to pay to ship back something because the company recommended me to buy the wrong size! I would still like my shipping costs back.
Is there a chemical pestiside mixed in with the material of these plugs?
There is not an insecticide mixed with the plugs. They are normal plastic plugs for plugging holes from performing a termite treatment, or for plugging carpenter bee holes. If you are plugging carpenter bee holes, then you should treat the holes before plugging them with a dust product. It is highly recommended to treat with the carpenter bee kit on our website which comes with plugs.