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We used to have a cat at home. For a while the cat wanted to sleep on my pillow during the day while I was at work. I brought a few goodies home from work, Photoelectric eye, an air valve, and a CO2 tank from the garage. I hooked up the photoeye to a battery pack and the photoeye waited patiently all day while I was at work just looking for any intruder on my pillow. When the family cat arrived the photoeye gave a signal to the air valve and blast went the air from the CO2 tank for just 2 seconds. After a few days, it was never a problem again. :dance:
Ken
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