BMSB treatments are causing secondary flare-ups of San Jose scale

Insecticides used to treat brown marmorated stink bug are depleting predatory insects that control San Jose scale, say Pennsylvania State University extension specialists. San Jose scale is easy to prevent, and prevention is preferable to trying to treat it once it starts. It is also a dangerous pest to leave uncontrolled, as it can kill a tree in a season or two.

Read more at the PSU extension page on San Jose scale.