First off, you can ask that the exterminator uses pet safe pesticides. You should definately tent your tank and sump, fresh air is crucial but the biggest thing is use tons of carbon, I'd reduce the water flow in the tank, keep the turbulence down to a minium but keep the sump going and have lots of carbon in there. The suggestion of ant traps is a good one, I've used them and they worked fine, I used some spray in the basement as well and with a fan going and the basement door open I didn't have an issue. The spray I used was a heavy foaming spray though, not much odor. I'd assume the more odor the more particles are floating around but if it's odor free you wouldn't notice.
Doug
|