So this would hold true for ants as well? Hmm. I may try that. I wonder just how much soap I have to use. I shall try it with 2 parts water 1 part (dish)soap and spray the pesky ants. Or are you saying the insects must be covered with undiluted (dish)soap
I haven't made a scientific study of it but 1 part in 3 dish soap should do the trick, maybe even 1 part in 4. I think as long as it would leave a detectable film when it dries would be enough.
I did read something last night regards Ants, but a quick explanation for Insects with exoskeletons; Application A few drops of soap in a gallon of water can be sufficient. Adding a few drips of oil helps the soap stick to the plant and continue to kill insects. For spraying plants indoors, adding 1 tsp. to a hand sprayer of water is recommended. Some plants such as sweet pea and some tomato varieties are harmed by contact with soap. Use a diluted solution and test one plant a few days before doing a general spraying. Repeated applications may be necessary for a heavy infestation of insects to be eradicated. Spray Large size home sprayers are available at garden centers or mail order from garden supply companies. Plants should be sprayed early in the morning so the mixture dries before the sun becomes hot. Insects are active in morning and evening, so they are easy to find and spray at that time. Use precaution when it is windy. Spray a gentle mist over the leaf tops and undersides, being sure to coat all affected surfaces of the plant. Effects The active ingredient in insecticidal soap is potassium salt of fatty acids. Insecticidal soaps such as Dawn detergent are contact insecticides that dissolve the insect's exoskeleton and disrupt the cell membrane. They may also remove the protective wax on the insect and thereby cause death. Dry detergents and laundry detergents are not effective because they are too harsh and will harm plants. Caution Although Dawn soap as a simple insecticide is effective, cheap and easy to use, there are some precautions to take. Do not use full-strength soap because it will kill beneficial insects. It can also damage eyes and skin when not diluted. Do not spray outside when it is windy. Be sure to thoroughly wet the entire area infested with insects.
So I can confirm that it works on ants. 1 part free hand soap from Roberton's (which they currently give out when you buy 1,000 pesos in groceres). And 2 parts water. Spray on ant infested area and they all die. I also found out (accidentally) that this combination works instantly on flies. And I found out this combination works best outside as it leaves very slippery floors when used in the house O-| Lizards don't like it either but I don't know if the little bugger died after he run off or not. So the only question is, does it work on wasps? My guess is it will work as well as it did on the flies but sure would like someone to test it and inform us.
Sorry mate, common sense is telling me (and no doubt several others) this is a job best left to a professional such as yourself, please do report back with an in depth update of your findings, please... The rest of the forum now awaits your findings with baited breath, and a few smelling suspiciously of 100 Proof Victory Punch... jejeje