Hi. First thing I would do is check and see how much it will add to your insurance. Second, although it's not one of the treatments that you need to register with (i.e. your local council), you can't just throw used rollers into the rubbish, (you will be drawing lymph and a little blood tho' only a small amount). so you would also need (morally) to get a waster collection service organised.
That aside, it's a great treatment but still requires a lot of responsibility. It's also not cheap to perform - if done properly - with pre and post product application as a necessary part of the treatment if you want good results.