I keep a moist hide in my LG's enclosures at all times. They shed every 3-4 weeks, and it's hard to know for certain when they are going into shed sometimes (I have 2 LG's and 10 other reptiles, so there is a lot going on here). Better to be safe than sorry.
The few times I've had issues, a quick soak in shallow water for a bit and a gentle rubbing with a q-tip as you say, should get it all off their toes. The key word here is "gentle." However, using the moist hide, and keeping temps and humidity where they should be (husbandry is the best defense against most issues), this shouldn't happen too often.
Good luck and keep us posted.