These lizards are can often be found at South Mountain doing pushups on the boulders and the lizard in the picture is a Chuckwalla. They range in size up to 16 inches, and they live in the Southwest here is Arizona from California all the way to Southern Utah and Nevada. We do have a lot of lizards here in Arizona, but nothing as big as those Florida Iguanas. Those were in the news recently when it got really cold and they were dropping from the trees. A friend has one in Payson, she named Stan, it hangs out daily and soaks in the sun.
In regards to pest control, we don’t treat and shouldn’t treat for them as they do more good than harm. They eat plants like annuals and perennials and will feed on insects. Occasionally they find their way inside, usually by mistake. Just let them out to continue to do what they do.