I actually heard of the water with worms thing from a guide on lake Erie and it was to keep his boat clean but I thought it to be a good Idea. The whole packing your worms in paper Idea was (I thought) because Canada does not let you bring in any organic material just has America, you can not bring back plants or fruits or veggies, I know this because we had a fellow in a group several years ago, got asked at the border, what your worms were packed in and he didn't know and said "Dirt", well 35 minutes later after they dug out the worms to find them in paper he knew better..... Thats what I remember when I crossed the border 7 plus years ago...