Neither of mine are maulting much (I have white sheets on the bed and both are black) however, recently I have heard them trying to hack up furballs They are brushed/combed although I could do this more often and more thoroughly. This morning though one yacked up some food and it happened around the time of the heaving.

So I have read about oily fish, like a tin of sardines. They are on a Hills kitten chicken dry (as well as wet food) so do I sub this Hills with Hills furball control? Or slowly mix it in? And how much? At the moment they're on about 2 handfuls between them a day, so not much. And going forward when the condition improves, every few days with the furball biccies or permantly (got 4kg left of kitten and it's kinda the only kitten stuff they're on these days).

Any other suggestions? They drink a good amount of water from a fountain.