Spraying them with horticultural oil (follow the label instructions carefully) should help.

The horticultural oils available now are what the industry calls refined.

Again the horticultural oils can bring them under control.

Scale insects, for example, have a crawler stage where horticultural oil can easily kill them.

Don't waste your efforts (or your horticultural oil) now; wait for next spring.

The first, which can be applied now, is horticultural oil.

Spray the entire tree - the tops and bottoms of all leaves - with horticultural oil.

But the most effective control by far is a spray of one of the horticultural oils.

Use of horticultural oils may overcome this problem but control is still difficult.

While the plants are still dormant, is the time to use horticultural oils.