1). Empty tin of pellets into rugby sock.
2). Tie knot in sock.
3). Place sock containing pellets into washing machine.
4). Select "hot" cycle. Add "Persil better than ever before, much improved whiteness Mk.2"
5). Press "go"
6). Wait an hour.
7). Remove sock containing pellets.
8). 90 minutes in tumble drier
9). Hey presto - clean pellets and a clean sock. You can do the other one later!
This has an added bonus too - the sock can be tied to your belt, with the pellets still in it, negating the need for a fancy pellet pouch.
(Sorry, too much time on my hands, must do some work now!)