I thought parazapper admited in a thread not too long ago that he had no evidence of zappers killing the larger parasites. This seems to be true, several people with gigantica worms arent getting healed by the zapper. One person lately said she was cured of parasites using the scada RSG4 zapper, she never felt any worms so im guessing they were not the hepitica giganta or any other large worms like tapes or flukes, which alot of people on this forum seem to be dealing with. Parazapper has lost respect on here because of his attacks on users calling them trolls when they are just people with parasites stating their results with zappers.The Scada rsg4 zapper looks way more sturdy made than the parazapper i have.