Ritaratbag wrote on Jun 12^th, 2016 at 9:02pm:

It appears that some posts have dissapeared from this topic, including one from me. Someone mentioned using the sachets, called W.C. Net. I answered saying that they can be found in most supermarkets on the shelves selling toilet/ cleaning products.

The posts are still there in another thread, I asked two questions in two posts :) didn't want to confuse drinking with flushing:-)