There is a liquid called "De-Solv-it" which can remove sticky spots and stains very easily. I use it to remove 貼紙 that stick at glass, wood, plastic & ceremic and the result is very good but I have not yet try on "cloth". However, according to the "direction", it said it can use on any surface.
I buy it from "Citi Store" at around $30. Pls take a look there.