Peggy from Carmichael, Ca writes
Yes, LambdaStar UltraCap 9.7% is labeled for cluster flies. It is recommended that you apply in late summer or early fall before flies are observed alighting on surfaces. Apply thoroughly on siding, under eaves, and around windows and doors. Do not spray to the point of runoff. This can be applied every 30 days outdoors.
Answer last updated on: 05/07/2017