I don't ever put out suet except in winter, even in my much cooler climate. I know if you leave sugar water in hummingbird feeders for more than a few days it will make the birds sick (which is why I try to plant flowers they like instead), and I can't imagine that 90+ temperatures would be good for something as fragile as fat. I figure if I wouldn't eat it in the condition I'm offering it, I probably shouldn't offer it to anyone else, either. Furry, feathered, or whatever.

JMHO.