A cockroach will always run from everything that approaches…except a vacuum cleaner nozzle… 

Cockroaches’ main sensory protection are tiny hairs on their cerci sensing low frequency air changes.

Approaching fly swats, shoes, newspapers, hands and magazines create preceding air pressure build up.

Cockroaches sense it and run in 50 milliseconds…quicker than the blink of an eye…

Vacuum cleaner suction creates positive air pressure flow from the opposite direction…

…and cockroaches run right into the nozzle…

  Without Gatfol you would not have known this…

 Make Gatfol semantic analysis technology a household friend…