I'm new at gardening, and I was really enjoying it until I got hit with (white flies, aphids, mealy bugs and thrips) all at the same time. And it's just sucked the fun out of gardening. My question is.... I just picked up some Neem oil after hearing that this is what I need to fight these bugs. Soapy water wasn't working. But will this work for all these bugs or do I need something else?

Thank you for your help.