Clint from Lansing, Mi writes
Exponent Insecticide Synergist has no insecticidal properties of its ownbut can be mixed with other liquid insecticides to make them more effective. As Dursban is a product no longer available we cannot confirm that it could be used to effectively treat for grubs as we are not aware of the target pests on the product label.
Answer last updated on: 09/28/2016