I am planning to grow cucumbers, pumpkins, and heirloom melons, but all my past crops have been killed either right away or eventually, by the wicked, disgusting squash bugs. I tried a basic H mixture which killed them if sprayed liberally, but it didn't work overall and my cucumbers succumbed to them. Any proven-effective methods out there for preventing and killing these guys? We grow organically so pesticides aren't allowed. Thanks