Side-by-side comparison based on expert reviews and community consensus.
Fresh Wave Odor Removing Gel
Best Gel DeodorizerPetkit PuraMax 2 Triple Odor Control System
Best Built-In Deodorizing SystemPrice
$13-$28
$370-$500
Summary
A plant-based gel that continuously neutralizes pet odors for up to 60 days without spraying or any effort. EPA Safer Choice-certified with no harsh chemicals — just set it near the litter box and let it work.
The PuraMax 2 automatic litter box features a three-layer deodorizing system — sealed waste bin, odor-eliminator attachment, and a citrusy deodorizing spray that fires after every cleaning cycle. It's the most comprehensive built-in deodorizing solution for cat owners who want to eliminate the problem at the source.
Pros
- Continuously deodorizes for up to 60 days with no effort required
- EPA Safer Choice-certified plant-based formula (lime, pine needles, clove, anise, cedarwood)
- Covers up to 200 square feet — enough for most litter box rooms
- Works in areas not suited for sprays, like closets or enclosed spaces
- Triple odor control: sealed waste bin + odor-eliminator attachment + automatic citrusy deodorizing spray
- Deodorizing spray fires after every cleaning cycle and randomly throughout the day
- WIRED reviewer noted the box 'smells neutral, dare I say it smells good'
- More affordable than Litter-Robot 4 while offering superior odor control features
Cons
- Initial scent can be overpowering when first opened
- Large rooms or multi-cat setups may need multiple jars
- Requires purchasing refills as gel evaporates
- Petkit app is overcrowded with ads for other products
- No sensor to alert when litter is low — must be manually checked
- Deodorizing cartridges require replacement over time, adding ongoing cost
Our take
For litter box areas where you can't use a spray every day, this gel is the set-and-forget solution. Plant-based, long-lasting, and tested by both The Spruce and Good Housekeeping — it's the passive deodorizer that actually works on pet odors.
If you're serious about litter odor, the real answer is attacking it at the source with an automatic box that has deodorizing built in. The PuraMax 2's triple system — including an automatic spray — is the most thorough passive deodorizing setup you can buy without spending $700.
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