"what's a good load for cat?
....whatever I happen to be carryin' when I seez 'em.
Every strayin' cat I see while I'm on my property gets the same treatment, might be different medicine, but the outcome is usually the same....GYD. Our pheasant and quail populations are hurting enough 'round these parts without the added strain of what feral or stray cats do to them.
Now I do keep a couple cats here on the farm to take care of the mousin' and rat business. And we do get the occasional stray tom who happens by hoping to service the female when she's takin' on customers. But, if I can do my part it's the last thing old tom ever does. And, if I find my own tom starts to strayin'(which usually starts when they're about a year and a half old) he get the same treatment.
Years ago my Grandpappy showed me how to take away some of the roaming urges from tom cats. I won't go into great detail but it involved an old boot, a very sharp knife, and a little medicinal value alcahol(some for the cat and a shot for Gramps when he was done).
That little out-patient procedure, although a bit painfull I'm sure, usually adds a few years life expectancy to old tom.
FWIW, stray/feral dogs don't fare much better when they step foot on my place. But that's another topic........