84 out of 100 Very good
Canada's finest, and one of the most beautifully engineered clays in the world. OdourLock Original is an Intersand litter, made in Quebec, and it takes No. 16 with eighty four, and on the four performance axes it is close to immaculate.
Dust, clumping, odour and tracking each score four and a half, a remarkably even run of near perfection. The maker's patented odour shield blocks ammonia for a claimed forty days, and the litter pours at a genuine ninety nine point nine percent dust free, absorbing several times its weight while leaving almost nothing on the floor. This is clay built by people who clearly obsess over the bench, and it shows in a card without a weak performance figure.
Sustainability sits at three, which is the ceiling on its ambitions and, in truth, a touch generous for the material: this is mined clay, discarded rather than renewed, though Intersand markets a lower impact footprint than most. That single axis is all that separates OdourLock from the upper order.
What you are buying is the thinking person's clay: dust free to a fault, long on odour control, firm clumping and low tracking, from a maker with a real engineering pedigree. It is the litter for the owner who has decided that mineral is the material for them and simply wants the best built version of it, conscience aside. On performance alone it runs with litters scored far higher here. A superb clay, and a worthy flag for Canada on the list.