Sounds like it could help. I would give it a try, perhaps the GK will give us his opinion.
Ok, hear we go
A totally safe and natural product proven to solve insect problems. It will control a variety of insects including aphids, mealy bugs, spider mites, soft
brown scale, psyllids, rose or pear slugs (sawfly larvae) and earwigs. Safer's Insecticidal Soap can be used on houseplants, roses, flowers, vegetables,
fruits, ornamentals, shrubs, trees or greenhouse plantings.

Soap has been used for centuries as an all-purpose pesticide. When sprayed on insects, insecticidal soap breaks down the insect's protective coating and
causes it to dehydrate and die. Insecticidal soap is very different than dish water soap. It is specially formulated with fatty acids to kill insects.
Dish washing soap on the other hand contains perfumes and dyes and in a concentrated form can be harmful to plants.

Safer's Insectidical Soap is natural and safe to use on shade trees, fruit trees, shrubs, houseplants, flowers and ornamentals. When using Safer's Insecticidal
Soap spray it directly onto the insects when they are first sighted on buds, shoots, stems, bark and the underside of leaves. It should be applied weekly
for 2 to 3 weeks.

The concentrate is mixed with water at a ratio of 1:50. The 16 oz. (500 mL) bottle when mixed with water will make 6.6 gallons (25 Litres) of insecticidal
soap spray.
Adieu