Do the providers provide the rubbers?

But it doesn't hurt to have a couple on hand. Especially if you're thinking of round 2. Some ladies will say they only have one. That's when you can pull it out and say, "That's OK, I bought one!"

They should always have them but I would always carry some hidden away...If they show up with only one or none then they are making a decision to try and short your time and you should keep that in mind before making an appointment with them again...