open-top sifting
CAST-500C open-top platform uses an open-top sifting mechanism. The manufacturer publishes no litter guidance for it. It is stated for cats up to 15 lb by the retail listing. 5 of the 6 questions buyers most often ask are not answered anywhere in the manufacturer's own material.
Each line above is derived from a value the manufacturer published; the source is shown against that value in the evidence table below. PURRINDEX draws no conclusion from a field a manufacturer left blank.
| Litter type | What the manufacturer states |
|---|---|
| Clumping clay | —Manufacturer does not state |
| Tofu | —Manufacturer does not state |
| Mixed | —Manufacturer does not state |
| Crystal | —Manufacturer does not state |
| Pine pellet | —Manufacturer does not state |
| Other pellet | —Manufacturer does not state |
No manufacturer litter guidance was located for this product. That absence is the finding, not a gap in the index.
Drawn to scale by PURRINDEX from the published dimensions below. An original drawing, not a product likeness and not manufacturer artwork.
These are the mechanisms the manufacturer documents. PURRINDEX does not rank or score safety, and the number of listed mechanisms is not a measure of anything. Retailer-declared
Absence of documentation is not evidence of a shortcoming in the product. It is a statement about what you can and cannot find out before buying.
Why this matters to you: the same hardware appears in this index under 2 different listings, and the observed price bands are not the same. If you are choosing between them, the difference you are paying for may be the label rather than the machine.
PURRINDEX states the observed evidence. We do not claim these products are identical and we do not characterise any seller's conduct.
Chosen by documented similarity — price band, form factor and the litter types each manufacturer states. Never by what a merchant pays.
PURRINDEX chooses the product first. Where you buy it is resolved afterwards and never affects what this site recommends — how that is enforced.
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