How to – Setup Litter-Robot III Open Air In 5 Easy Min

The Litter-Robot III Open Air is an automatic self-cleaning cat litter box. The large capacity litter chamber makes it suitable for multi-size, multi-cat household.

The Litter-Robot III Open Air works primarily based on the weight sensor. Any change in weight means the cat is inside. Once it leaves, the sensor will wait a few minutes (default is 7 minutes) before starting a clean cycle.


During clean cycle, the globe rotates for 2-1/2 minutes. It sifts any clumps and collect it in the drawer. At the end of the rotation, it levels the litter in preparation for the next use.

Now that you understand how the awesome Litter-Robot III Open Air works,  let’s set it up. This will be the easiest 5 minutes you spent on litter box.

Add Litter

Use clumping litter of your choice and fill it up to the fill line.

It will take about 1.5 gal (6.6 L) or approximately 10 lbs of litter. For me that is about half a box of the medium Arm & Hammer Multi-Cat Clump & Seal Clumping Litter. For other clumping litter suggestions, check out the list of best clumping litter.

Install Mat

Place the rubber mat by the entrance. This will catch some of the litter as your cat exits the globe.

Line Drawer

The spent litter is collected in the drawer. Check the drawer to make sure there is a liner and that it is empty.

Each Litter Robot III Open Air comes with a biodegradable waste drawer liner. Buy more liner from Litter-Robot shop.

Alternatively, any 10 – 13 gal (38 – 49 L) trash bag works fine. We use the Glad OdorShield trash bag since that is what we already use in the kitchen and it fits well in the drawer.

Power Up

Connect the power supply to the back of the Litter Robot III Open Air. Plug the power adapter to the wall outlet.

Press POWER button. This will initiate a clean cycle that lasts 2-1/2 minutes. As it rotates, the following will happen:

      • Litter will pass through the screen to separate the clumps (if any).
      • Clumps fall into the waste drawer.
      • Clean litter falls back into original position.
      • Litter is leveled.

NOTE: If your smallest cat is less than 5 lbs, do NOT let the box automatically clean. Their low weight might not activate the weight sensor. Until it has gained enough weight, power the litter box manually to clean.

You are all set!

Your Litter-Robot III Open Air is now ready for its prime time and you just got a ticket to freedom (of scooping litter box daily). Interested in finding out more? Ask your question under the comments section below.

In case you need it, here is the Litter-Robot III Open Air instruction manual.

Happy with your Litter-Robot III Open Air? Spread the word to your friends and family. This link gives them $25 off from Litter-Robot Shop. Alternatively, get it from Amazon.Litter-Robot

(Disclaimer: This post contains some affiliate links (read more about it here). However, my opinions are my own and I would only endorse items that I would let my cats use.)



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