Hi Radek, think of all the Pubs and restaurants who have ugly black wads of chewing gum stuck to their vinyl and wood floors and don't have a clue how to remove them, this is a very lucrative add on service for any carpet or hard floor cleaning guys who are tuned in to earning extra revenue streams, i think the best tool available for providing this service is from contico as their floor scraper comes with sprung steel blades which just whip the black chewing wads away from vinyl and wood floors with ease and without causing any damage to the surfaces, sometimes there will still be a sticky residue left behind especially from chewing gum wads which have been there for long periods of time, again just apply a small amount of chewing remover to a microfiber cloth and these residues will wipe away with ease. If you are reading this Jamie shag your nightclub owners and start promoting this solution which is a huge problem in thousands of Pubs and Restaurants and you can start to earn easier and serious money.