Hello, I recently bought hemp bedding. However, it seems that there are some black spots on some many of the pieces. I bought two 200liter packs and they both have the spots. When I asked a Hamster group on Facebook, someone said it could be burn marks from when they flash dry it. Has anyone had experience with spots like this on bedding, especially hemp? The black stuff washes off when I rinse it underwater. I haven't used it in my hamsters' enclosures because I wasn't sure what it is.
