It is summer is Wisconsin. Do like I do and collect the moths that show up at your porch lights. I have yet to find an amphibian that doesn't like moths.

Just skip out on any that are stark black and white, have lots of bright orange anywhere on them, or orange/yellow underwings. They may not get eaten as most are distasteful. If you are near water, your pets will really dig the beetles and mayflies that show up at the lights too.

A black light aimed at a white bedsheet outdoors at night is an almost instant amphibian live food buffet!