Through all the reading I've done I had not once seen ultrasound mentioned as treatment for cannabis pests. I will agree that this test was not done with cannabis but with fruit but the results should carry over. I've also been reading about people using them to get rid of white flies as well. Long story short, you can treat or prevent infection with ultrasound. It has been shown to mess with fertility and the hatching of eggs as well not to mention they don't want to be around it. Maybe crazy maybe not?