Elizabeth from Sandford writes
Does it kill on contact like insecticidal soap or will it continue to kill aphids that were under cover during spraying but walk over the sprayed area later?
Yes, Hi-Yield 55% Malathion Insecticide Spray does have a residual effect. This product lasts for 30 days after application. It does not kill on contact.
Answer last updated on: 04/02/2017