Bonide Systemic Insect Spray Ready-To-Spray can be applied on an as needed basis, with 10-14 day intervals between applications, not to exceed the maximum rate. Please review the full product label for complete application instructions.
The Bonide Systemic Insect Spray Ready-To-Spray bottle should have 2 moving parts, a knob control lever that is the on/off, and then there is a sprayer hood that has the fan/stream positions on it.
If you did not turn the knob to the on position, then you probably didn't spray any of the liquid out.
Bonide Systemic Insect Spray Ready-To-Spray does not require you to wash the bushes, trees, shrubs, etc before application. When spraying taller trees, shrubs and ornamentals, twist the sprayer hood to "stream" position for extended reach and more uniform coverage.
The product label does not require trees be prewashed prior to the applicaiton. View the full product label for more information.
According to the manufacturer, and the label, the product Bonide Systemic Insect Spray Ready-To-Spray may only be sprayed after flower petals have fallen off.