Are pest repeller good for children?

 

Yep, draws em on over so they can see what the noise is about!

I assume you are talking ultrasonic models?

 

Depends whether you're talking about a spray or the ultasonic noisemaker. Kids will continue wreaking havoc despite being blasted with ultrasonic waves; seen it first hand, it doesn't phase them. I can only speculate that the spray would have a good chance at success; especially the 20' spraying foam wasp killer. I bet you could get kids off your lawn in a hurry with that.