3 ms·
good point, it's within their audible frequency which is between 40Hz to 60kHz (65kHz in some dogs); the knife is 40kHz, so it will drive them completely crazy.
by natas 1y ago
good point, it's within their audible frequency which is between 40Hz to 60kHz (65kHz in some dogs); the knife is 40kHz, so it will drive them completely crazy.