Disclaimer: This post may contain affiliate links. As an Amazon Associate, we earn from qualifying purchases.
Last updated on September 1, 2026
Dr. Elsey’s Respiratory Relief is a low-dust, hypoallergenic clay clumping litter designed for households where airborne dust and fragrance are a concern. It’s one of the more specific formulas in the Dr. Elsey’s lineup, marketed for cats with respiratory sensitivities and stress-related litter box issues.
Note: older Dr. Elsey’s materials referenced a silica-gel Respiratory Relief formula. The current lineup lists R&R as a clay clumping litter only. Dr. Elsey’s current low-dust silica-gel option is called Clean Air, which is a separate product. This review covers the R&R clay clumping formula.
How R&R Differs from Dr. Elsey’s Ultra
Dr. Elsey’s makes several clay formulas and they can look similar at a glance. The two most commonly compared are the Ultra UnScented and the R&R Respiratory Relief.
Both are unscented clumping clay litters. Ultra has the simpler ingredient list, with natural clay as its only listed ingredient and no perfumes or deodorants. R&R adds herbal essences and is specifically marketed as a low-dust, hypoallergenic option for cats with respiratory issues. Both are free of perfumes and deodorants.
The herbal essences are what make R&R the specialized formula. Dr. Elsey’s positions them as contributing to a calming litter box experience, connecting stress reduction to respiratory health. Ultra has no such additions.
For a comparison across all Dr. Elsey’s formulas, our full Dr. Elsey’s cat litter review covers the complete lineup.
What’s In It
The listed ingredients are natural clay and herbal essences. Dr. Elsey’s describes the formula as:
- Low dust and hypoallergenic
- No plant proteins, no perfumes, no deodorants
- Natural herbal essences for stress reduction
- Multi-cat strength with enhanced odor control
Dust Performance
Dust is the most reviewed and most debated aspect of this product, which makes sense given its positioning.
Most owner feedback describes the litter as genuinely low in dust, and it’s the most consistently positive dust finding among Dr. Elsey’s clay products in our review research. One reviewer specifically found it less irritating than several other litters marketed as low-dust, including corn, crystal, paper, and wood options.
That said, experiences aren’t universal. Cats.com reproduces a customer review from an owner who found the clay noticeably dusty and said it did not work well for their respiratory-sensitive cat. That doesn’t establish that the litter caused the cat’s symptoms, but it is a useful reminder that low-dust claims don’t guarantee the same experience in every household.
If your cat has respiratory symptoms, talk to your vet before and after any litter change rather than expecting the litter to resolve the issue on its own.
Clumping and Odor
Clumping is hard and reliable, consistent with what Dr. Elsey’s clay formulas deliver generally. Clumps hold together during scooping without crumbling.
Dr. Elsey’s currently markets R&R as having enhanced odor control. Reviewers also describe good odor performance in both single- and multi-cat households.
Compatibility
The clumping clay format is suitable for mechanical litter boxes according to the product information. Some owners report using it successfully in automatic systems including the Litter-Robot 3. Check your machine’s litter requirements before switching, as compatibility can vary by model.
What the Manufacturer Says About Respiratory Benefits
Dr. Elsey’s current product page states the low-dust formula and herbal essences “combine to create a calming litter box experience to reduce stress, which can be an important factor in controlling Feline Respiratory Disease.”
This is Dr. Elsey’s explanation of why the formula is positioned for respiratory-sensitive cats. It should not be read as a claim that litter treats respiratory disease. Asthma, coughing, wheezing, labored breathing, and persistent sneezing require veterinary evaluation. Any vet discussing a cat’s respiratory health may well mention litter as one environmental variable to review, but it’s one factor among many.
For a broader look at low-dust options, our guides to best low dust cat litter and best hypoallergenic cat litter cover more of the field including non-clay alternatives.
Possible Downsides
Because it’s clay-based, R&R is heavier to carry and pour than many plant-based litters. This is the same trade-off as any clay formula.
Some reviewers note the clay can stick to the sides of the box more than other formulas, requiring a bit more scrubbing during a full clean. This isn’t unique to R&R but is worth knowing if you’re switching from a smooth stainless-steel litter box that’s easier to wipe clean.
Dust experience varies between households as noted above. It’s not guaranteed to feel low-dust in every setup.
Who Should Consider It
R&R makes the most sense for households that want Dr. Elsey’s familiar hard-clumping clay performance and specifically want the formula the company markets for cats with respiratory issues. Compared with Ultra, R&R adds herbal essences and carries the respiratory-relief and hypoallergenic positioning.
It’s not the choice for anyone wanting to move away from clay entirely. For that, plant-based and wood fiber alternatives are a better starting point.
FAQ
What is the difference between Dr. Elsey’s Respiratory Relief and Ultra?
Both are unscented clumping clay litters. Ultra has the simpler ingredient list and is made from natural clay with no perfumes or deodorants. R&R adds herbal essences and is specifically marketed as a low-dust, hypoallergenic option for cats with respiratory issues. Both are free of perfumes and deodorants.
Does this litter actually help cats with respiratory problems?
Dr. Elsey’s markets it for cats with respiratory issues. The formula is low dust and contains no perfumes or deodorants, which removes some variables that may matter in a respiratory-sensitive household. Whether it helps an individual cat depends on what is causing the symptoms. If your cat has breathing issues, a vet visit is the right first step rather than a litter change alone.
Is there still a silica gel Respiratory Relief version?
Older Dr. Elsey’s materials did reference a silica-gel version under the Respiratory Relief name. The current Dr. Elsey’s lineup lists R&R as a clay clumping formula. Their current low-dust silica-gel product is called Clean Air, which is a separate product.
How often should the litter be replaced?
Dr. Elsey’s instructions are to fill to 3 to 4 inches, scoop twice daily, and add litter as necessary. Replace according to household needs. Do not flush.
Can it be used in an automatic litter box?
The product information confirms suitability for mechanical litter boxes. Some owners report success in automatic systems such as the Litter-Robot 3. Check your specific machine’s litter requirements before switching since compatibility varies by model.
