I think anything with a sweet taste or strong smell would attract them. I also was told pour deisel or oil on a log or on the ground and the hogs would waller in it to keep flies and biting insects off them. I was gonna try that, then somebody asked me if I had ever skinned a hog coated in deisel or oil. Changed my mind about that one. Don't want no drunk hogs covered in oil on my ranch. Just muddy ones with cool-aid lipstick.