i have tried every thing there is on this earth to try and prevent ybs over the last 11 years and no chance,,,11 years,,,11 ybs,, :( :( one year i even had a year of the darky and tried them on natural incase it was the darky,,still got it,,,theres one thing i havent tried yet and that what strapper as just put on,,,injecting them at a early age,,,i dont wont to start arguing over this thread ,,,we are all different in our own ways,,what works for bill might not work for benn....all the best to who ever has masterd this horrible thing....mark... ;)