In response to your questions:
I am interested in how many MMS drops are not activated per liter of water? I use the previously mentioned 1 drop of 250ml of water? Are 4 drops per liter of water? Is this okay?
YES 4 DROPS PER LITER IS OKAY BUT I WOULD RECOMMEND 1 DROP PER LITER WHICH WOULD BE 1/4 DROP PER 250 BECAUSE OF THE TYPICAL SIZE OF "CATS" UNLESS OR COURSE YOUR CATS ARE LIONS OR TIGERS, ETC.
And how long does it have to give this cat a cancer of his nose?
TO CURE THE CANCER, AS LONG AS IT TAKES BUT FOR NOSE APPLICATION YOU SHOULD USE ACTIVATED MMS1 OR CDS OR CDH.
And how long do I give the rest to the water they drink daily?
SINCE ALL YOUR CATS ARE SICK AS YOU SAY, I WOULD PUT IT IN ALL THEIR WATER FOR AS LONG AS IT TAKES FOR THEM TO GET WELL.
Is this limited, or lifelong?
I'VE BEEN PUTTING DROPS IN ALL OF MY WATER FOR OVER 2 YEARS NOW AND PLAN TO CONTINUE IT FOR YEARS TO COME IF NOT MY ENTIRE LIFE - UP TO YOU THOUGH (I MEAN IT'S UP TO THE CATS, SINCE THEY HAVE FREE WILL)