When it comes to growing cannabis, you’ll inevitably run into the problem of pests. And I’m not talking about scavenger smokers, I’m talking about aphids or whiteflies or even spider mites. Left unattended, these pests can obliterate a crop. One of the worst feelings for any cannabis grower is seeing his or her buds covered with the nasty critters, eating, pissing and shitting all over their hard work.