Do you have white pines that look like someone painted the trunk white? If so, you might have Pine Bark Adelgid insects feeding on the sap of your tree. Luckily, these insects are not harmful to your trees.
Should you treat with an insecticide? No, this is not necessary. These insects do not harm the tree. If they bother you you can rinse off the insects with a stream of water from a garden hose.
