Great result, pleasant, friendly and quick advice - gladly again. When we wanted to move into our new apartment, the associated cellar was almost unusable (nicotine / tobacco contamination). The previous tenant had probably used the cellar as a PC room for many years and was a heavy smoker, the walls, all cable routing, lamps etc. were yellow from nicotine and tobacco and the worst was the smell of nicotine, which even smokers could perceive. Without professional cleaning, sooner or later everything you put in the basement would have smelled just as nasty. Luckily for us, the property management or the owner took over the costs. Thanks to the rapid use of Silent Clean, our cellar is clean and free of nicotine and tobacco smell.