I do have a computerized machine, and the store people told me to use a Q-tip (no oil!) to clean the bobbin area. It also fits in the little nooks and crannies under and around the bobbin area. My goodness, the fuzz it gets! They did tell me not to use canned air - just blows it further into the machine. I occasionally use the vac with small attachments. I figure it's getting fuzz out even if I don't see it coming out.