I need to clarify something…
I have posted many videos talking about the difference between pre-emergents that professionals use, and those that homeowners typically buy off the shelf. What I want to clarify is that the pre-emergents I typically talk about (simazine, prodiamine and specticle) CAN ABSOLUTELY be purchased and applied by homeowners. They are available for anyone to purchase, and it is completely legal for anyone to apply them to their own lawn.
The point that I want to get across is about the difference in quality in the pre-emergents that professionals use, and what is most commonly purchased by homeowners off the shelf. The two most common pre-emergents you find in granular products off the shelf are gallery and dimension. Gallery and dimension ARE GOOD PRODUCTS, they DO work…but the products that most professionals use just work better! But again, that does NOT mean you have to be a professional to apply those products, they are available for anyone to purchase and use.
Hope this helps, we are glad to answer any questions you have!