76 out of 100 Good
Japan's value titan turns to paper, and the result is a litter that leads entirely with its conscience. Iris Ohyama, one of the country's great home goods makers and a perennial bestseller on its home market, brings its flushable recycled paper litter in at No. 30 with seventy six, crowned by a perfect sustainability score.
Sustainability is the headline, a flawless five: made from recycled paper, flushable down the toilet, and engineered with the brand's characteristic care, it is one of the greenest litters on the list and a genuine waste stream success. Dust and tracking each score a solid four, the larger paper grain pouring with little haze and a low tendency to scatter, the pellets too big to ride out easily on paws.
The card is held back by the two axes paper struggles with most. Clumping is marked at three, the paper hardening when wet but more softly than clay or cassava, and odour at the same three, controlled steadily rather than strongly. This is a litter that asks for a sifting routine and prompt scooping rather than one that seals a box for days.
What you are buying is a genuinely sustainable, flushable litter from a maker that engineers everything it touches, the practical green choice for a tidy Japanese household. It will not deliver the stone hard clump or the days long odour seal of the mineral leaders, but it composts its conscience clean and keeps its grain in the box. For the owner who prizes a recycled, flushable litter above raw clumping power, it is a sensible and well made answer. A quiet, principled litter from a trusted name.