Steve from Mesa writes
Altosid Pro-G releases effective levels of ALTOSID insect growth regulator for up to 30 days after application. Applications should be continued throughout the entire season to maintain adequate control. Treated larvae continue to develop normally to the pupal stage where they die. The amount of product you use will be based solely on the amount of water you are treating. Please refer to the product label for more information. Usually mosquito larvae do not develop in septic tanks, so please be sure you have properly identified the insects you are seeking to control.
Answer last updated on: 10/07/2011