Each property is unique unto it's problems, and different weeds require different chemicals. Usually a combination or combinations of herbicides are necessary to provide the desired results and lasting effects. Inspection and weed identification are critical to decide upon the right herbicides. This occurs with rain, ground water movement, ground slope, and this varies with the soil texture. This must be taken into consideration when deciding what areas need to be controlled.
Weather is also an important factor.
Naturally, when the chemicals need to be applied coincides with the time we get the most rain. Wind also needs to be taken into consideration for the notorious drift factor, especially if there are desirable vegetation in the vicinity. Service available only in Kansas and Missouri.