Thank you for your question. Not many Tofu litters are suitable for the Litter-Robot, as they are pellet shape which is too large and usually too light to drop through the sieve.

Cat Evolution Tofu is designed for Tofu lovers who utilize the Litter-Robot, and has added activated carbon to help with additional odour control over summer. 

Note soiled Tofu is best removed from the Waste Drawer daily or at most, every 2-3 days as being an organic litter, it is less able to odour lock for long, and may also attract insects.

The Litter-Robot is designed for clay clumping litter. The hallmarks of good litter for the Robot, and for your cats, is fast clumping, low dust and if possible, carbon or activated charcoal to assist with odour control in summer conditions. We have 2 clay clumping litters, Premium and Superior, currently available on our website, that are designed for these characteristics.

For your cat's particular behavior, all litters will struggle to absorb if she does pee at the edge where there is little litter. Faster clumping litter will help. I have a cat who also pees at the front (Pixel) and I have a fence in place, which helps move him back a little and encourages him to not step where he has peed. Its not a complete solution but has helped. I would also suggest tracking help, such as the ramp, which has scooped steps to catch litter from paws as your cats descend from the Robot, and a honeycomb style, litter trapping mat at the bottom, to help contain any litter that makes it to the floor. The ramp and the mat will help pick up paw prints and litter before tracking across the floor. 

Tofu litter is lighter, and will usually track more, as well as having different clumping characteristics.

If you decide to purchase ramp and fence, we usually have accessory packs in stock and should be restocking soon, so do register your email to be notified when available again, if you would like to purchase as a bundle. Accessory packs include carbon filters, ramp, fence and liners.

The tofu + carbon litter is supplied as 4x6lt bags made of polyethylene plus nylon, HDPE - based on a web search it should be recyclable. The bags are shipped in a cat approved cardboard box, for safe delivery, with Australia Post.

We have transitioned from Cat Evolution Premium Clay to Cat Evolution Tofu by adding Tofu to topup, and found that it mixes well.

We have tested the litter purrsonally, and it works with the Litter-Robot III Open Air well.