Posted by Deutz Lover on August 25, 2020 at 13:58:09 from (66.172.80.74):
In Reply to: Sonic repeller? posted by rrman61 on August 25, 2020 at 08:11:14:
Ran experiments many years ago on cockroaches. They used the housing as a condo. University of Kansas. That was about 40 years ago. Every so often they bring out a new package and new electronics for new suckers.
All hype unless you want to torment higher mammals. They might work close up, but I am not sure of this.
Humans can only hear up to 23 khz and that is only if you are young.
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