Yes, you can use Gnatrol WDG Biological Larvicide while also fertilizing. It will not diminish the efficacy of your fertilizer since it's meant to kill fungus gnat larvae.
Gnatrol WDG Biological Larvicide has a 2 year shelf life, and according to the product label should be stored in a cool dry place [59-86°F (15-30°C)].
We would recommend reaching out to the manufacturer of Gnatrol WDG Biological Larvicide to confirm if any issues using in conjuction with peroxide or chlorine. Then can be reached at 925-256-2700
Gnatrol WDG Biological Larvicide is a wettable dispersable granule. Rain will not inhibit the efficacy of the product.
Gnatrol WDG Biological Larvicide is for use only in Greenhouse as listed on the product label. We do carry several forms of Altosid larvicide which can be used in outdoors areas of different sizes, including liquid, granule, and briquets. Please let us know if you need assistance selecting a product.
Gnatrol WDG Biological Larvicide does not mention tank mixing on the product label, we would not recommend doing so.
Gnatrol WDG Biological Larvicide is OMRI certified and the current certificate is valid until March 2023.