We had a terrible infestation of potato bugs this year but could not find a product that would irradiate them. It seems the old products we used to buy are no longer available. Please tell me the name of a product that will work that I can buy for next year. East Selkirk.
Potato beetle control – I have had good success using a formulation containing Bacillus thuringiensis var. tenebrionis (Bt-t) bacteria. This targets the young larvae, so it should be applied every few days as soon as the eggs start to hatch. If you apply it too early, the bacteria won’t survive until the larvae emerge, so the treatment won’t work. Also, Bt-t is sensitive to UV rays, so you should spray late in the evening or on cloudy days. Also make sure that it won’t rain within 8 hours after you have sprayed. You can tell if the treatment is working because the larvae will turn black.