When I do coffee enemas I find, or at least would, that after the bag has emptied (clear bag-you can see) that there would still be some coffee remaining in the tubing and very bottom of the bag. I came up with a solution. I took a fleet enema bottle (obviously emptied of its original contents) and fill it with what's left in the bag/tubing. I attach a catheter 14Fr/ 16" (41cm) to the bottle nozzle and place a few inches of the catheter into my rectum and slowly squeeze the bottle. It works very well. I've posted some images.