comment: >
  
  This is a fantastic solution
context: Like, physically?  How fucking loud is it? >
  
  Find out how much power and dB it is to push a known weight, scale up. I think the military has loudspeakers powerful enough. >
  
  They used to play classical music at the train stations so the kids didn't hang out. >
  
  It worked until Beethoven and Bach started hanging out. >
  
  A Walgren's in Albuquerque does this. I used to get my lunch across the street at the supermarket then go sit on the grass out front. I noticed a number of others doing similar. A roasted chicken thigh, fresh tortillas, and Rossini is absolutely the best. >
  
  Back in the '80s when I was skateboarding me and Friends used to go skating at a local church. They had plenty of handrails and nice wide sloping handicap ramps, perfect for skateboarding and grinding. Calling the cops on us to get us to leave didn't work, then they sprinkled gravel on all the sidewalks and ramps around the church. We brought brooms. Then they decided to loudly pipe out some  corny hillbilly sounding bluegrass gospel music to get us to leave.... it had a decent BPM to skate to. Then they decided to go CIA mode and torture us with Old Testament Bible readings by who sounded  like Ferris Bueller's school teacher, and did it at full blast.. we surrendered, we moved on to a strip mall a couple blocks over from the church >
  
  I mean, this is better than spraying them with a hose.