I would read up a bit about the use of those No Pest Strips before putting them into your grow space. I read somewhere that it is not advised to use them while the plants are in flower, and that it is essential that you wash your plants with water after using them. The insecticide that is used in them is very harmful if you are exposed to it for a long time, the instructions suggest that you should not use it in areas that you live in or stay in for elongated periods of time. They are supposed to be used in sheds and outhouses to get rid of insects, or cupboard spaces that are sealed off to rid clothes of moth damage. Apparently they are very effective, and will kill all spider mites within a day of being exposed to the strips, but at a possible cost to your health if you are also exposed to them. This product is NOT for bedroom growers! If you are going to put one in your grow room, turn the fans off for the twelve hour dark period and leave the strip in there. Take it out again when the lights come on and turn the fans back on. Repeat the procedure again the next dark period and they should have all died. Please read up on them first before using them.