>>2429532Yes, it is safe with most paper. You want to avoid glossy paper, or anything plastic like packing tape. Most newspaper nowadays uses onions ink so that is fine for worms to eat too.
>>2429545It's hard for me to monitor their behavior, I generally feed/check on them every few weeks. I have caught 2 having sex with each other though.
>>2429600You can do African nightcrawlers or European nightcrawlers, but if you're interested in breeding earth worms your best bet may bed an in-garden worm bin. Get a bucket, drill some holes in it, and bury it in your garden bed. Place food scraps and shredded paper/cardboard in the bucket and worms will find it and eat and multiply.
>>2429610Yes, their castings make good fertilizer you can use in the garden. Started as my girlfriend's idea for "free" fertilizer and ended up being mostly my project as she lost interest in the worms.
>>2429620No I don't, you'd just be surprised how much food waste and paper/cardboard a single person can produce. With the 9 bins, that's enough for almost all of my food waste and cardboard scrap. I'd like to entertain trying to sell pounds of worms locally as well, but I haven't tried yet.