I'd like to clobber the insects in our garage. I did this several years ago with some bug bombs, and it worked pretty well; however, I was a bit concerned about the pilot light in the water heater, which I suddenly realized was on. I proceeded to open all the garage doors, and remove the bomb. In the next few days, I did find quite a few bugs who had crawled out from areas near the walls to die.
Aside from the pilot light notion, one needs to either remove stuff from the garage or cover it. That can take a bit of doing.
It occurred to me that since most bugs seem close to the floor why not get some sort of hose that has some fogging repellent that one could disperse along the floor, and between objects close to floor. A check at the local h/w store found none. Comments?