I'm in Osaka right now and you'll find those around the temples at night. They kill my ears but I'm the only one in my group that can hear them. I think they'r

I'm in Osaka right now and you'll find those around the temples at night. They kill my ears but I'm the only one in my group that can hear them. I think they're meant to scare cats away, but they work well for teenagers and people like myself (26)