http://www.hotshotbrand.com/ProductCategories/IndoorInsecticides/NoPestStrip/
The general consensus around here are these are generally pretty safe to use, however DONT use them the last 30 days of flowering or in an area of the house where people live... Basement is fine, Attic I would be a little more worried about because the fumes are heavier than air.
Although most said they only work on smaller mite problems....
These sound like a good idea, however if your grow room is vented how can the chemicals reach a high enough concentration to work? If the exhaust is off when the lights are off would that be enough time for it to build up each night?
One tactic is to carefully cover the top of the soil with plastic, and then tape it down, so you have a poncho of sorts over the dirt.