Put on your rubber gloves, protective mask, and protective goggles. These articles should be worn at all times when handling the chemicals contained in Killzall Weed Killer.
Measure out three tablespoons of Killzall Weed Killer, add it to the lawn sprayer bottle, then add a gallon of water. Three tablespoons is the suggested amount to be used for ordinary weeds you find in your yard, but it is advised to increase the amount to five tablespoons for weeds that are a bit more difficult to kill.
Connect the sprayer attachment to the lawn sprayer bottle, then spray your lawn on a rain-free day. Do not treat your lawn with Killzall if there is rain foreseen in the next 48 hours, or you may run the chance of the rain diluting the chemicals, rendering them ineffective. Make sure that you have fully saturated the weeds by spraying them generously.
Repeat the process every four weeks if the weeds are resistant to treatment.