Dog repeller

Hi, I search the web for a dog repeller schematic but I didn't find anything. Can anyone help and send me more information about this.
Thank's

Try the mosquito repellent right here at this website! https://www.electro-tech-online.com/threads/need-help-in-building-an-alarm-circuit.2187/ It's for mosquitos, but the high frequency sound will drive away cats and dogs too.

Well, youv'e seen the schematic, so now you know just as much as I do now. :lol: Because I haven't built it myself yet. But I'd use RadioShack's 273-073 (https://www.radioshack.com/product...._name=CTLG_011_002_003_000&product_id=273-073) speaker. Please let me know how it works for you so I can know if it will work for me, OK? Good luck!