Susanne from Lafe, Arkansas writes
According to the product label Spectracide Triazicide Once & Done Insect Killer Concentrate should be applied in calm weather when rain is not predicted for 24 hours to ensure the pesticide is not washed away. If heavy rain occurs before the 24 hour time period, the product can be washed away and will need to be reapplied.
Answer last updated on: 04/12/2019