Its easy! Just use the magic fingers to sweep up any dry, messy surface, then roll away the rest! To clean the roller, just run it under steaming hot water, and roll it over a lint-free towel to dry it. It will be sticky again right away!
Good news - It doesn't, at least not anytime soon! It will keep sticking for up to 10 years. If you notice it losing its stickiness, wash the roller with some dish soap and hot water. It will be as good as new!