After all of these answers and thinking about it a little bit, I've decided that this is definitely not the best idea for me.
Kyllikki s it mean that I can buy the unwashed seeds, use them first to do my laundry and then afterwards when they are not good for that any more, cook them and eat them? 🤔 😆
This is an even bigger no, I want my food to be clean, but not that clean! 😃