Tania from Los Angeles, Ca writes
I had read online that Hydroprene in Gentrol photo-degrades and is therefore only for indoor use. Can it still be used indoors near windows that have UV-filtering film, so there is daylight, but negligible UV?
Yes, you are correct. We only recommend using Gentrol indoors. Yes, Gentrol used near a window indoors will still remain effective. If you are also wanting to an IGR outdoors, we suggest Nyguard IGR as it will remain photostable for up to 7 months.
Answer last updated on: 10/23/2013
