That is true. If you read in some of my other posts i don't believe in a to strong zapper. First of all do no harm is my motto. Now there is powerfull zappers out there like the one parazapper build. I accidently build one that gave 5A current. I just touched it once, my heart stopped for 3 seconds. Now when is it to strong or to weak ? Hilda clark spoke of 300micro amps. Bob beck spoke of 100micro amps. Now people use a 3mA Zapper. So what is just enough ?