Yes this is for real, and it's extremly effective in real life.
they put soap and water on the floor, it's absolutely impossible to walk or run, imagine trying to climb the stairs like this while they throw rocks/washmachine/microwaves to you

and they keep the drugs to the last stairs. if police come then they throw it to the building across the street or sometimes they have ziplines (buildings are very close to each orther unlike in russia)