What you need is a desiccant, which is the main ingredient, namely crushed chrysanthemum plants, in commercial preparations for all bugs. What it does is dry out the exoskeleton of said critters. Some bugs are more evasive, like termites, and may require a pro before things get out of hand. You didn't say what was in the diy prep you use for other pests?
Hi Karen, Call in the exterminator!
Here's a post that might help - https://www.pesthow.com/how-to-get-rid-of-termites/
Karen....Don't waste money on anything just call an exterminator! Get names from people you know have used them. You need this taken care of by someone who knows this business. Good luck!