I have tried many different types of litter in all ranges, from the bentonite , tofu, casava, paper based etc, some even on experimental basis. Hands down this one is the best, and I will be continuing with this. This is 3 times expensive than bentonite ones, which are the cheapest. But they stay fresh and odourless atleast 3x or even for longer time duration. No odour at all. The wood absorbs all that like magic. This is a gift I give myself lol, not the cats, beause it has helped me solve odour problems and dust problems. 5.2 kg packet can last for me 2 months. I use half of it first time, next month I replace that and re-fill with the next half. In case bentonite, I had to replace 5 kg every 15 days, or it would become unbearable or will start attracting flies. Plus, around 2.5 kg of this one is equal to 5kg bentonite in volume, and hence enough hei1 allowing be to spread the use of 5.2 kg packet of cat's best over 2 months for one litter box