Sylvia from Texas writes,
Can I mix Permethrin SFR with Onslaught?
Trying to rid fleas, bird mites and ticks.
These products should not be mixed together. There is no valid reason to mix Onslaught and Permethrin SFR together. They are both synthetic pyrethroids so there would be nothing to gain by mixing these products together. Making a pesticide too strong can actually backfire. Areas that are treated with this overly concentrated spray will be repellent and insects will simply avoid the treated areas prolonging the infestation.
Answer last updated on: 08/09/2014