J. from Ahwahnee, California writes,
Will Bifen hurt pine and redwood? Do mosquitoes hang out in these evergreens or in landscape bark?
Bifen IT will not harm your trees. It is very gentle on trees, shrubs, lawns and ornamentals. Mosquitoes tend to harbor on the undersides of the leaves. Be sure to mix 1 oz per gallon of water per 1,000 sq ft and treat monthly. We also suggest adding an insect growth regulator (IGR) such as Pivot 10 to impede the insects reproductive cycle.
Mosquito Control Article
Answer last updated on: 07/23/2014