Valeria from Athens writes
If I purchase a 16 oz bottle of IGR concentrate & use 1 oz every four months, the last of the concentrate will have been stored for 5 years before use. Is it reasonable to expect the concentrate to still be potent this long?
Gentrol IGR Concentrate has a shelf life of about 3-5 years if kept out of extreme temperatures and direct sunlight. It can be applied more often then ever 4 months depending on the pest you are trying to control so it should still be effective in that time.
Answer last updated on: 07/25/2016
