Not for multi cat and poor value for money
I bought about 5 bags of these crystals so have used them quite a lot. Unfortunately I have to agree with a previous reviewer. At an absolute stretch, this may last 10 days in a 2 cat indoor household. But more realistically 7 days.
And I even used thick layers of newspapers underneath to help absorb excess liquid (which I regularly removed).
However tracking is minimal which is good.
Though initially it absorbs the smell well in the first few days, it soon starts to reek of ammonia.
I have since switched to "the best cat litter in the world" which is far supreme in every way.