Seal Holes with Cobra Plugs

What happens here

With the preservative stick now inserted into the hole, the creator takes one of the red Cobra Plugs from the kit. He first manually pushes the plug into the hole as far as it will go. Then, using his Phillips head screwdriver, he firmly screws the plug into the hole until it is completely flush and secure. This action effectively seals the hole, protecting the inserted preservative stick and preventing moisture from entering. He concludes by emphasizing that this treatment is a smart investment to protect wood structures.

Goal: Securely seal the drilled holes to protect the preservative and prevent moisture intrusion.