And both cats I have just tried it. I will not buy expensive food again, they eat the cheap one from the neighborhood supermarket just fine, not to mention that with the same amount of money I can buy 1000 gr. It may be of better quality but I can't force them to eat it if they don't want to.

It does what it promises, it dissolves the hairball and that's the only reason you buy it. 9/10 the cat liked it and ate it happily. Otherwise, it is VERY EXPENSIVE!