When comparing chemical weed control to physical and mechanical weed control methods the difference is clear. Current technology of chemical weed control, allows herbicides with low toxicity and low active ingredient rates to control weeds with the use of less time and money along with minimum environmental impact.
Using physical weed control to maintain flower beds, gardens, stoned yards and other areas can be done on a limited smaller scale. I use physical weed control on small areas or isolated weeds at my home all summer. I like to work outside in my yard, but large areas will clearly force me to spend more time to maintain a weed free area. Multiply that by the regrowth of new weeds all summer long until the first killing frost. There is no fun spending time pulling weeds with the high outside temperatures, hot sun and possible insect bites or stings!
Chemical weed control will save you time and money. Less noise is created and less time is needed to cover an area with a chemical application versus a mechanical application. The application can be tailored to give you specific results. Applications can be made to control stoned yards while not harming the flowers, ornamentals, trees, pets and people. You can selectively control Multiflora rose if pastures. Applications can be made to control the various invasive weed species while leaving the non invasive plants. Applications can be timed to control brush along highways without chemical brownout or ugly tree look. Phragmites can be controlled in marshland allowing desirable plants to fill back in the next year and allow the fish and game live unharmed. Note, applicators can make treatments that last seasonally!