Monterey Herbicide Helper - Oil Concentrate is made up of crop oil and nonionic material.
Monterey Herbicide Helper - Oil Concentrate is mixed at 2 tbsp. in 3 to 5 gallons of mixed spray.
Using Monterey Herbicide Helper or any other surfactant with Trimec 992 can damage turfgrass, reducing selectively. We would not recommend using a surfactant with Trimec 992 unless turf damage can be tolerated, or unless a small area is tested first. Monterey Herbicide is available in 8 oz and 16 oz bottles. You can browse our other surfactants here.
Yes you can mix the Monterey Herbicide Helper Oil Concentrate with the Tenacity when using it for post emergent spot treatments of labeled weeds in northern lawns.
No, you do not have to use Monterey Herbicide Helper or any other surfactant with Triplet SF Selective Herbicide.