I read all the reviews and figured I would give it a try, however the roaches are still everywhere this stuff did nothing for them! They run right through it like nothing, have to say I am not impressed, very disappointed!!
Expert response: Gentrol IGR does not kill any roaches. It just prevents them from reproducing and slows down the life cycle. It will not decrease numbers immediately. You should use a contact kill spray and roach gel in addition to an IGR.
I have purchased this product as well as others from this site to eliminate sewer flies. None of them worked. The truth is that sewer flies are caused by a break in a sewer or waste line and these products may seem to work at first, BUT they will not eliminate the need for fixing a pipe or dealing with a plumbing problem. Do yourself a favor -- I spent over $100 on products from this company including Gentrol. They do NOT eliminate sewer flies