I have tricide neo and redhen is correct, you can use it now without performing surgery. The only two concerns I have about tricide neo is #1. the cost. #2. time. Dont get me wrong, it works great...if you have the time, about 7 minutes a day soaking a chickens foot for at least 6 days up to 2 weeks or more.....if you have the spare time to do that. I didnt have the time and as a personal choice, I chose the surgery and within 4 days maximum, my chickens are all healed from their surgery and back to normal. If one can afford the trineo and provide the time...by all means, I fully support the use of trineo.