Don't be passive with this though, I have to respectfully disagree with the professor. My last crop had little green caterpillars which led to bud rot and it spread very quickly and I had to harvest early. If you have at least a week before you harvest, I'd give it a good spray of malathion. You don't want to f around with bugs. If you go to the store, I'm sure you can find some Bonide Fruit Tree Spray, it has malathion as well as captan which is a fungicide. It doesn't work on powdery mildew, so if you develop that, you'll have to switch to something else or add it to the mix.
Some people are afraid of using malathion in flower, but it's either bugs or spray. The main concern most people have is bud rot, but with the fungicide included in the mix, I don't think that will be a problem. It wasn't a problem for me and I think it's actually what helped keep the bud rot problem at a minimum... I'll call if 'bug rot'.
The stuff smells nasty, but I never tasted or smelled a trace of it in my product and you shouldn't either as long as you don't spray within a week of trimming. It takes a week for it to break down.