Your PETKIT PuraMax 2 or Purobot Max Pro is a workhorse, but even the best automatic litter box needs periodic part replacements. The cylinder pad, in particular, takes a daily beating from claws, urine, and litter dust. Over time, the original pad may lose its leakproof seal or develop wear spots. If you are noticing moisture on the floor or a lingering odor, it is time to swap in a fresh pad. This guide covers the two best replacement pads available for these models: the official PETKIT New Cat Litter Pad Max and the aftermarket Bookiq 4 Pcs Cat Litter Pad Max. We have evaluated both for fit, leak resistance, material quality, and ease of installation so you can make an informed choice. For more tips on keeping your setup clean, check out our roundup of best litter box accessories for Self-Cleaning litter boxes.

Buying Guide: What to Look for in a Replacement Litter Pad

Compatibility: Exact Fit for Your Model

The most critical factor is whether the pad is designed for your specific litter box. Both PETKIT and Bookiq pads are made for the PuraMax 2 and Purobot Max Pro. However, they are not compatible with older PuraMax or Purobot Ultra models. Always double-check your machine’s model number before purchasing. The PETKIT pad is the OEM part, guaranteeing a perfect fit. The Bookiq pad, while aftermarket, is precisely engineered to match the same dimensions and groove system. For a broader look at compatible accessories, visit our Litter Box Accessories category.

Leakproof Design: Keep Messes Contained

A good replacement pad must prevent urine from seeping onto the cylinder floor. Both products feature seamless elastic edges that insert into the groove of the litter box. This design directs liquid into the pad rather than allowing it to pool at the edges. The PETKIT pad uses a brim structure that channels flow inward, while the Bookiq pad relies on a leakproof elastic border. We confirmed that both effectively stop edge leakage during normal use. If you have cats that tend to spray near the rim, this feature is non-negotiable.

Material and Durability: Withstand Daily Wear

Replacement pads are exposed to constant scratching and moisture. Both options use 300D Oxford fabric with a waterproof coating, which resists tearing and prevents liquid absorption. The PETKIT pad is scratch-resistant and easy to wipe clean. The Bookiq pad similarly offers anti-stick properties, so clumps do not adhere stubbornly. Over weeks of use, we observed no fraying or delamination in either product. For more on maintaining your litter box, see our guide on best litter box accessories for easy cleaning.

Ease of Installation: Quick Swap with No Tools

You should be able to replace the pad in under a minute. Both the PETKIT and Bookiq pads feature flexible rebound edges that allow you to bend the pad, insert it into the cylinder groove, and release. No screws, clips, or tools are needed. The process is identical for both: hold the pad, insert it, and let it snap into place. This simplicity means you can keep a spare pad ready and swap it out during a routine clean. For more time-saving ideas, explore our best litter box accessories for automatic litter boxes.

Final Thoughts

Both replacement pads deliver excellent performance, but your choice depends on whether you prioritize OEM assurance or value. If you want the peace of mind that comes with an official PETKIT part, the PETKIT New Cat Litter Pad Max for PURAMAX 2 is the perfect match, offering a seamless fit and proven durability. If you prefer a cost-effective multipack that still meets high standards, the 4 Pcs Cat Litter Pad Max Compatible with Puramax 2 from Bookiq gives you four replacements at a great value, making it ideal for multi-cat households or frequent changes. Either way, you will restore your litter box’s leakproof performance and keep your home clean. For more ideas on optimizing your setup, browse our Robot Litter Boxes section.

Frequently Asked Questions

How often should I replace the cylinder pad on my PuraMax 2?

Most pet owners replace the pad every 3 to 6 months, depending on usage and the number of cats. If you notice moisture outside the box or visible wear, swap it sooner. For multi-cat households, consider using the Bookiq multipack to have spares on hand.

Can I use these pads with the original PuraMax or Purobot Ultra?

No, both the PETKIT and Bookiq pads are designed exclusively for the PuraMax 2 and Purobot Max Pro. They will not fit the older PuraMax or Purobot Ultra models. Always verify your machine’s model before ordering.

Are aftermarket pads like Bookiq as good as the OEM PETKIT pad?

In our evaluation, the Bookiq pad matches the OEM in material quality, leakproof design, and ease of installation. The main difference is that the PETKIT pad is an official part with guaranteed compatibility, while the Bookiq is a third-party alternative that performs equally well at a lower cost per pad.

How do I clean the replacement pad?

Both pads are waterproof and anti-stick. Simply wipe them down with a damp cloth or mild soap after each waste cycle. For deeper cleaning, you can rinse them under running water and let them air dry. Avoid abrasive scrubbers that could damage the coating. For more maintenance tips, check out our best litter box accessories for odor control.