To find out what the strips do, wikipedia+dichlorvos. Dichlorvos is the main active ingredient in the strips. Any strip you buy regardless of brand will work as long as it has a high dichlorvos content. The one I got here has 19.2% dichlorvos. This chemical is so strong, you don't need continous release of it into your grow room, only use it as a bomb, for a couple of days in a row. Seal up your grow room so there is little air circulation so the vapor released from the strip builds up. I did this for 4 days in a row for 6 hours during the veg night cycle (so the temp would stay down as I switched off the vent system, switched it back to 24h light after) and the infestation I had was eradicated. Dichlorvos is apparently not absorbed by plants according to research on the chemical. It affects neurons, so no risk of it harming your plants, just don't smell it for too long. Air out the high vapor concentration quickly after and don't forget to save the pouch the strip came in and tape it back up in an air-tight manner so you can save the chemicals in the strip for later and also don't release them in your house. The strip releases vapor of dichlorvos, it seems to me people don't understand this, the vapor will reach anywhere air can reach if the concentrations build up to a high enough level.