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Far less fun though! I regularly spend at least as much if not more doing some project myself instead of buying an off-the-shelf solution. I do it because I enjoy it, can make it work exactly the way I want it to, and don't then suffer from potential vendor lock-in.

I’ve seen this before, but it’s essentially a compressed air subscription service.

> Replacement cans are easy to use, 80 to 100 sprays per replacement

Regular air duster cans work just as well and are significantly less expensive than their refill cannisters.

After a few times the cats avoid the sprayer, so you don't churn through them as fast as you'd think.

Compressed air sold in stores usually contains bitterants and skin-dyes and other chemicals to deter abuse by people seeking to use them for getting high. If you're worried about an animal's health, spraying it with those added chemicals might not be congruent with your initial anxiety.

This appears to just be motion-activated, as opposed to being activated specifically by pets?