Hubby wipes our little girl (a light squeeze with toilet paper to get any leftovers in the little water pipe) every time after she goes inside when he's around. We've had puppy wick mark experiences on our light coloured sleeves in the past... also, our girl drips a bit near the pad as she's walking away from it after she's done her business.
Mommy doesn't give her pee pee wipes 95% of the time, but would give "good potty" treats 90% of the time.