Don't put suet out in high summer temperatures, it can spoil and melt, coating feathers. This is a tried and true suet recipe that I found in Birds and Blooms Extra, contributed by Virginia Barnard. She explains that it works very well in Oklahoma's high summer temperatures. We live in Wisconsin, where it obviously isn't quite as hot, but it has held up here, even in direct sun. The squirrels like it too, but now that we're offering other food for them, a little ways away, they aren't bothering it as much as they were at first. The recipe is written for lard, but I used saved bacon grease and it has worked fine. The next time I make it, I'm going to experiment with less or none of the sugar, as it doesn't seem necessary. But, I guess maybe the birds could have a little sweet tooth, too! Note: yield is approximate. I doubled the batch last time I made it, and filled 2 quart ziplock containers after putting some in a feeder, so I'm not exactly sure how much I started out with.