It is believed that as the chairs offer no difference to the smell message, and are definitely not threatening, women subconsciously go towards them and find it to be some kind of invisible sanctuary. This experiment has been successfully repeated on telephone booths and it was found that not only were those booths used more often by women, so were the ones either side and furthermore the average duration of call increased. In both of these experiments men reacted quite differently. They tended to avoid both the sprayed chairs and the telephone booths. It is thought that they were keeping away from a territory which has already been claimed by someone more dominant than themselves.
Debt collecting letters on the other hand are by their very nature threatening.
Sprayed letters were paid more often and slightly quicker. Subconsciously by smell it said this letter was sent by someone who is dominant, aggressive and serious. The smell equivalent of red print on a bill. We have used animal pheromones for centuries in our perfumes as fixatives sometimes even calling them aphrodisiacs. They are also highly prized by performers for the enhacing exalting effect they have on any mixture of essential oils or fragrances.