Lasts well but....
I have been trying a number of cat litters around a similar price and got 2 bags of this as they don;t do it in a larger size.
The bags lasted by 2 indoor kitties 3 1/2 weeks without any smell.
However it wasn't so great with the clumping with some clumps staying solid but the majority breaking up when trying to scoop them up.
I found it didn't trail too badly for the first few days but after that it was below average with grains getting past my 2 mats and into other rooms.