I’ve tested a ton of suet for bird feeding over the years and the Attractor Peanut Suet Plugs are one of my favorite products to use for my birch log suet feeder. I’ve witnessed Downy, Hairy, and Red-Bellied Woodpeckers all eat this regularly.
I love feeding the woodpeckers outside of my apartment patio. I have a suet log feeder that woodpeckers love to cling from while they have a snack. I needed a re-stock in a pinch and ordered a Wildlife Sciences Suet Plugs variety pack off Amazon.