Well they are good for the garden, but if they make you uncomfortable that's the reality. I don't know of any solution here. There are repellents for snakes, but I don't know if they would work for lizards. The Liquid Fence company makes a snake repellent which I supposed you could try on the lizards, but otherwise, there's no real way to keep them out of your garden. The Liquid Fence is generally sold at garden centers and home stores.