This happened to me just the other day, unfortunately in by bedroom. I had thrown an almost empty cartridge into the bin and had been away for a few days. When I came home someone had obviously been in my room as the bin was on its side and there was the cartridge with a heap of wax coming out of it into the carpet. A book that I had been reading was also stuck to the floor by a big lump of wax. I was mortified. I ended up pouring loads of equipment cleaner onto the wax and letting it soak in, then scrubbed away. I repeated it over and over until eventually to my surpise all the wax was gone. I also used the cleaner on my book and that worked too, and there wasnt even any staining left on it.
I did think of trying to use an iron somehow but couldn't decide whether it would work or make it worse lol. Wish I had just tried it, it would have been a hell of a lot quicker.