Low quality turkey (animal) meat, mashed up and mixed with rusk, water, other low quality "meats" (offal, ears, pig trotters, bumholes etc) and an array of flavourings and sweeteners and reconstituted into a helical shape and coated with breadcrumbs and oven baked.
Basically the same as any other easily affordable breaded, reconstituted meat product, except it's in a helix instead of a sausage or burger pattie shape.
I've never had one, but they're probably delicious.
Yeah, it's probably a warning for wheelie bins rather than trees :)