I make my suet mixture using suet or lard. I melt the fat in a glass bowl in the microwave until liquid. Then I add crunchy peanut butter, which melts in the hot fat. Then I add the dried ingredients - corn meal, flour, oats (usually ground in blender), ground eggshells, crushed nuts, a little jam or jelly, etc. The mixture is about 1/2 fat, 1/2 dried ingredients - maybe a little more dried. I aim for a mixture that is the texture of Play-doh - it clumps together easily for the suet log, but also crumbles into pieces that I spread in a tray feeder. I made the suet log over 3 years ago out of an old red Pine log and glued lots of perches and branches. It did not have much bark on it - which is fine, except that over time the log has darkened quite a bit, perhaps because of the oils in the suet mixture. Also, most of the perches and branches have broken and fallen off. This birds don't seem to care. If you put perches on the log, this will enable many more birds to eat more easily. However, this isn't necessarily a good thing because with mine, it enables the Starlings and Blue Jays to hog the suet log, and it encourages House Sparrows. My suet log is pole-mounted with a squirrel/raccoon baffle, so nothing gets onto the log but the birds. Here's what the suet mixture looks like - Some Bluebirds on the suet log a couple years ago. They don't eat that much on the suet log any more, because I usually spread crumbles in a tray for them.

I would toss it. The fat/oils have probably become rancid and the seeds and nuts have lost any nutritional value.

I found this on sialis.com : " I got an e-mail from someone who made a homemade halo out of one of those umbrella hats you can buy at a dollar store. They attached the line, using duct tape between every two lines to keep them from getting tangled. It worked like a charm, and for the first time birds normally intimidated by HOSP are visiting the feeder. She also said it worked to deter starlings from a suet feeder."

I feed 2 types of suet or lard - the plain raw beef suet in a suet cage, and a home-made mixture of rendered fat (suet or lard) with peanut butter, corn meal and flour, nuts, etc. Rendered suet stays solid at higher temperatures - I think it's in the 90s F - than unrendered suet. I do feed the raw suet year round and it doesn't melt because we don't get temps in the 90s that often, and also the suet cage is sited on the north side of a large tree trunk so it has little sun exposure. The woodpeckers love the raw suet but many other birds will nibble on it too. Many birds also love the home-made mixture, and the Bluebirds come every winter to eat nuggets. This past winter I had up to 12 bluebirds! But I feed much less of all the bird food in the summer because there are usually plenty of insects for them to eat.