I bought this product to replace the fast acting sand from the same company, after my cat developed an allergy. The odor control is at the same level as the fast acting one, except for the first five minutes when you detect a slight smell (an open litter box in a relatively small bathroom). The clumping is also at the same level. I believe it produces slightly less dust compared to the fast acting one. It is very positive that it is odorless and bothers the cats less. With cleaning 2 to 3 times a day and washing the litter box once a week after sifting all the litter into another box to reuse it, the package definitely lasts for 1.5 months. For the initial filling of the litter box, which is very large (dimensions 71*55 cm), I needed around 12 kilograms. The cat used it immediately. Overall, after using this litter for a period of 3 months, I am very satisfied.