I do, actually--

[He scoots back, pulling out of her. With a wrinkled nose he tugs off the condom.]

Evanesco! If you'll hold still? Scourgify!

[He repeats that last spell a few more times, just to be sure they've gotten everything, before giving her a small smile.]

Of course, if you'd like to wash your hands or something, obviously, feel free, but it's a good deal simpler getting rid of condoms this way.