If that sound is from the USB mic itself that probably won’t help. I was warned away from them by Kozikowski among others. Here’s what he had to say about them in an earlier thread:
"The love affair with USB microphones is losing it’s glow because of several shortcomings. The worst one is “frying mosquitoes” noise in the background. This noise is burned into the USB system and it’s rough to remove in post production.
http://kozco.com/tech/audacity/clips/FryingMosquitoes3.wav
It can prevent you from achieving ACX conformance.
This is a technical problem, but there are certainly physical ones as well. We can’t take out the dog barking in the background. Sorry. Forget Noise Removal. It doesn’t remove noise. All it does is suppress certain background sounds that weren’t all that much of a problem in the first place.
We have posters going into production with the idea that Noise Removal is going to get them “Out of Jail.” It won’t. And these producers are pretty much doomed."