I’ve been using the Petsafe tall units, but like the low profile and slightly lower price of these smaller units so I tried one. First one arrived with a rusted supply can, but they sent out replacement right away and it works!
I have cats that get on the kitchen counters and I was concerned would eventually burn their paws on the stove. This device works great to change that behavior without any injury to them. I move it around so I only have needed one. A great help for a happy life with cats!
I waved my hand in front of it several times and no burst of air. Eventually it worked. The burst of air is very weak and I am not sure it will actually deter any of the cats from that area.
Unfortunately it goes off when set, when anyone walks by, etc. Which uses up the air spray. The alarm sound is not very loud. Kinda scares our cat off the table but not 100% effective.