You just need to do your homework and read her reviews.  Her profile will say whether she welcomes a digit or two and the Juicy Details will elaborate on that.  Almost all the girls I see like a finger or two during DATY, especially if you know how to find her G-Spot -- which isn't hard.  If she can really come during a session, the combination, when applied expertly, will send her over the top.  I usually start that way because it motivates her to respond with some really stellar BBBJ.

1. before any session, I make sure that I clip my fingernails and file them down real good. The stuff that can get below unclipped fingernails is gross and loaded with germs. It takes 5 minutes to do and it's sooo worth it.

Also upon arriving to an in call location, I always excuse myself to wash my hands and I do a very complete wash. If your taking mass transit to get to your meeting, just imagine all the germs. Washing your hands is a no brainer.
Big deal, what's 2 minutes washing your hands - it's totally worth it!

Believe it or not, the gals do take notice and they do appreciate the effort. I think those two things are just minor ways of extending the mileage of your visit.

nycad