If choosing soap sprays, use of the products manufactured for this purpose is essential.

Then there are the soap sprays sold under several trade names, including Safer and, more recently, Concern.

If timing on the horticultural oil application is missed, homeowners have still another chance with the insecticidal soap sprays.

Several days later I spray with a soap spray to make sure all traces of insects are eliminated.

This positive trend has spawned a great number of products, hence the popularity of the soap sprays.

During the summer hemlocks can be sprayed again with a fattyacid-based soap spray.

These soap sprays attack mealybugs, spittlebugs, white flies and aphids, among other common pests.

But one thing is important to know: the soap sprays are not cure-alls.

When using the soap sprays, apply them thoroughly, so the spray drips from the branches.

You'll need to repeat the soap spray in a few days, too, because the last act of a dying aphid is often giving birth.