Slug control electric fence (100% and most humane)

Saying 100% about anything is a bit risky but in this case, assuming every is done correctly, I feel pretty comfortable about the title. I've been making electric fences to keep slugs out of my raised beds for more than 25 years. Early on I had a patent search done and it came back positive but I wasn't prepared to invest many thousands of dollars in getting patents. Anyway the idea works and my Youtube videos have received 10's of thousands of views. Here's my latest video on this subject.

Stapling the electric fence wires around the raised bed