Now, I'm not saying anything like nothing could work better, but unless you have gotten one recently, you have not tried the ZP Zapper either. (Remember the one you had before was a different one without a circuit) and I have not heard of anyone stopping Zapping because the ZP was not working. I have heard of a couple of people who were so skeptical of the size that they sent it back or threw it in the trash, but for a serious person, it's a matter of consistance - and mine did come with instructions, though not 20 pages or them. I still highly recommend everyone to read Dr. Clark's book as she is the Ph, D. not me!
As for the foot pads I have been interested in these, but I have not found any in my plumbing store browsings, (though I have not done a lot of searching.) I am a big fan of Home Depot (hardware store), so I probably will find something eventually. It's not urgant right now, so I'm happy with the rings. (Have you tried these yet?)