Equipment used for pruning or cutting of oak species (Quercus spp.) in public projects will be disinfected after each tree is completely cut and before proceeding to the next tree. A solution of nine parts water to one part bleach is recommended for disinfection of all pruning and cutting equipment, however spray disinfectants or a solution of four parts water to one part isopropyl alcohol are also suitable. Tool surfaces that contact any part of the tree should be thoroughly coated with the disinfecting solution. On chain saws the drive sprocket and interior surfaces should also be disinfected. This disinfection procedure is highly recommended for private projects.