Reply To: What flowers are these?

[Zoodulcis]

Most lizards pick up sounds in the 500-4,000 Hz range, with a peak sensitivity at 700 Hz. The ultrasonic devices generally emit sound at 65,000 Hz, well above the hearing range of your beardie.

I did some research and it turns out that these units do have some effect. They generally reduce the numbers of ants but do not eliminate them entirely. Also, the size of the room and proximity to the problem area seem to make a difference. So while you may potentially be wasting your money, you will not harm your beardie. They seem pretty inexpensive, so perhaps you should experiment and go for it!