IMHO, this is the best solution. That being said, it is always best to research the product you are using. Some have no soil life, while others can remain active in the soil, therefor damaging roots in the vacinity, while others only work by vascular action. Read the MSDS (material data safety sheet).
History: I spent 18 of my 20 years in freeway landscape going to classes and seminars for my pesticide applicators license. We didn't use Pesticides, but we did use lots of herbicides. What I learned from it mostly was that all the lower forms of life, like viruses, pathogens, and weeds adapt faster than the chemical companies can keep up, and many of the chemicals are at least as harmful to the planet as the current cure. If you use any type of chemicals, rotate them. It is hard to do when you find something that works, but it won't work forever. The same applies to antibiotics.
