Jamie from Howards Grove, Wi writes
Altosid and BTI Dunks are equally effective for treating mosquito larvae in standing water. Their mode of action is slight different since they contain different active ingredients. BTI Dunks should only be used in containerized water, while the label for Altosid IGR has a broader range of areas where it can be applied. Mosquito Control Article
Answer last updated on: 07/29/2015