Pesticide Smell in Home?

I have an 8 year old home, concrete slab on grade (no basement) and for the last 3.5 years have been dealing with a horrible pesticide smell. It first started in the middle of the master bedroom closet. I cleaned the carpets, but it didn't help, then finally I pulled them up and cleaned the floor and installed new carpet.

3 months later, the new carpet had "soaked up the smell" and it too had to be ripped out. I had to seal the floor with DryLock and buy more new carpet and padding. The smell "moved" to one side of my master bedroom. Same deal. I had to rip off the flooring and Drylock the concrete and buy new pads and carpet.

Now the smell has "moved" to the bathroom under the tile. It is definitely from the slab floor. If you lay a clean towel down, wait an hour, pick it up - you would be almost knocked over by a chemical smell. There were no noticeable cracks in the floors or stains when I removed carpeting. I only get the outside of the home sprayed once every 3 months - "not" inside. It's only on one side of home. I have had a ton of people come in to try to figure it out.

Any ideas? The builder says its probably from the bug guy, the bug guy says their chemical doesn't smell like that and the plumber doesn't see any problems. Was I built on top of an abandoned tank or something? What else smells like Raid? I purchased a radon gas detector - but nothing. Do I get the soil under house tested? I'm so frustrated I'm about to just move out!

By CeCe