Liquid Harvest Lazer Blue Concentrate Spray Pattern Indicator 8 Ounce & Liquid Harvest Surfactant for Herbicides Non-Ionic 8 Ounce

I used this to spray my yard for pests, this is to know where I did and did not reach while spraying. Easy enough to use, covers fairly well, but make sure to wear skin and eye protection or you'll end up as blue as your yard.

Used both the blue indicator and surfactant with a B-GON crabgrass killer according to the label. The sprayed area remained blue for a few days which was great. All weeds died after a few days. So apparently the surfactant worked as well.

Didn't know how useful this stuff is until I tried it. It takes the guess work out of spraying a area... the surfactant holds the products on the plant leaf longer to absorb the product...thus making it more effective.

Love the surfactant. Works perfectly. You only need a small amount though. The blue on the other hand works good but stains horribly and I won’t use it again. It spilled on my concrete drive and took forever to get off and it sprayed on my concrete patio and stained which took forever to get off. If you use it please keep this in mind, it stains anything it touches and can be very messy.

For me, this stuff is required for spraying. The first time you use it—if you are like me—you will be surprised to see how much you missed. It’s an added expense that is well worth it. The surfactant is like any surfactant.

Tried on my very weedy yard and it killed/turned all crab grass white and really showed off how many weeds I had. Didn't kill grass, only killed weeds.

I needed to spray some larger areas for weed control. This made it much easier to see where I had already sprayed. The surfactant really seemed to help the weed killer stick to the weeds and not run off.

Love these 2 together they work well, and make your life easier.