On rounds when applying both pre and post emergent herbicides is it beneficial to include a surfactant, either non-ionic or MSO? By my logic, it would seem to be more detrimental than beneficial if it is impeeding the pre-emergent from getting washed into the soil. Labels on pre-emergent herbicides I have looked at do not indicate a surfactant should not be used. Thoughts or any information you may be able to direct me to would be appreciated. Happy Holidays!