I really wonder about what the impact of having a lot of these devices in a house with animals which can hear higher frequency ranges would be. Most (all?) rode

I really wonder about what the impact of having a lot of these devices in a house with animals which can hear higher frequency ranges would be. Most (all?) rodents, cats, and--to a lesser extent--dogs all hear well into the ultrasonic range. I don't know if this is the sort of ambient noise that they'd habituate to easily or if it would cause constant stress.