As I said because a year ago in winter I treated or one cat that time it was six hundred fifty four five million lit ers while and new do the concentration was some fifteen mil Li grams now its four hundred four five million development and concentration is are sixteen point five I found an other brand the same seller the price is reduced now I still expensive and I have the second cat and now de third one that might have a happy so I m just like no I cannot be more just too expensive。