Do check the House Rabbit Society's site on litter training, it's excellent. Like Miss Sophie, my guys trained themselves. It's really a matter of putting their litter box(es---yes, you'll probably want more than one) where THEY want them, not where you want them. Good luck!!! I hope you can keep them inside, they are worth the extra effort and besides the more you interact with them, the faster and more they will interact with you.