Clumps do not fall into the tray

Common

You roll the box but clumps stay in the litter bed instead of dropping through the grate.

Likely causes

  • Litter is not clumping hard enough — cheap clay breaks up on the roll.
  • The bed is too shallow, so urine reaches the plastic and smears.
  • The box was not rolled fully onto its side.

Fix it, in this order

  1. Use a firm-clumping clay. This design depends entirely on clumps holding together. Budget litter is a false economy here.
  2. Deepen the bed. Three inches minimum. Shallow beds are the usual cause.
  3. Roll it all the way. Roll until the box is fully on its side and hold for two seconds before rolling back.

When to stop and get help: There is no mechanism to fail here — if clumps still will not drop, the litter is the variable to change.

Litter and waste stuck in the seams

Common

Material collects where the two halves join and does not clear on rolling.

Likely causes

  • This is inherent to the two-piece design.
  • The halves are not clipped fully together, widening the seam.
  • Litter is too fine and packs into the joint.

Fix it, in this order

  1. Split and wash monthly. Unclip the halves and wash both with warm water and unscented soap.
  2. Check the clips. Press all clips home. A partly open seam collects far more material.
  3. Try a coarser litter. Fine-grain litter packs into the joint; a coarser clay does not.

When to stop and get help: Not a fault. It is the maintenance cost of a $45 box with no motor.