If you happen to use my reacharound method here are a few tips, gained from experience. 1st, have your pocketknife really sharp. 2nd. After you have them by the balls, Hold em high and out to your side as you twirl them about overhead as each paw has at least 20 razor sharp claws and 4 of those paws are going round and round meaning to do damage to you, and I don't blame them. 3rd. As you twirl them about, move to an area where they have room to fly, like out in the front yard instead of directly in front of your garage door as it is hard to time when your cut takes place and you don't want them flying off into the garage as they really have a case of the ASS at that point. BTDT
4th. and most important, is to twirl them about overhead fast enough and long enough that most of their blood goes to their head and they really don't know WTF is going on, the paws slow down, your cut is made and they land in the grass or bushes and you have time to run like hell and get a door closed between you and that cat before they recover. That cuts down on blood loss too as all of their blood is at the other end. Always remember, Centrifugal force is your friend.
Another option is to live trap them then put on motorsicle racing leathers and/or good weldors leathers and GOOD high welding gloves when you remove them from the trap. Always remember that cat is not friendly to you at that point, Stuff them headfirst into a short piece of stovepipe and hold onto their tail, then using that sharp pocketknife, scalpel or whatever, do your work, use a hot soldering iron to cauterize any blood flow, point the stovepipe in the direction you want them to go and let go of their tail. They make neat scratching sounds as they exit the stovepipe and they are always going downrange in high gear.
If this seems cruel and unusual, keep your fucking cat under control and not in my AO.
If this seems too severe for ANY animal lovers, then by all means come on out here and learn how the beef or pork or lamb you eat is produced and that carrots and potatoes etc. actually grow in the dirt, and you eat them. All of those products don't just magically show up in a bag at the Supermarket nor are they clean unless somebody did a lot of work to get them there. FM