We don't get borers locally. I'd leave the stem but apply Bt to the holes and the entire plant.
The tiny white moths are white flies. Ladybugs will eat their eggs, but if you have a lot of them, try neem oil or insecticidal soap to knock down their numbers.
thanks so much I apply neem once or twice a week but those things jump off when they get sprayed and then come right back to the wet plants lol. That's what i wanted to hear about the stems. I'll go get bt and apply it into the holes this evening. Do you think i should get a syringe and inject some bt in from the where they entered and then maybe another inch and a half above? First time I've seen them in 4 years of outdoor.