Fresh Step Advanced Extreme Clump Multi Cat Clumping Litter with Febreze Freshness, Mountain Spring Scent, Ammonia Block Technology, Low Dust, Low Tracking, 18.5 lb. Box, Pack of 2 Review

By Dr. Lena Ortiz · Canine wellness writer · Published 2026-05-30 · Updated 2026-06-24

4.7 (20,600) Amazon rating$33.5910,000+ bought last month

Our verdict

Fresh Step's Extreme Clump formula stacks Mountain Spring scent, Ammonia Block technology, and low dust, low tracking claims into one multi cat litter, and a 4.7 star rating from 20,600 reviews backs up the combination.

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Best for

Multi cat households that want strong clumping plus a noticeable Mountain Spring scent and reduced dust and tracking.

Skip if

You or your cat prefer unscented litter, since Mountain Spring is a distinct fragrance layered on top of the Febreze freshness.

Priced 34% above the category median ($24.99 across 153 tracked models)

Our scorecard

4.7/5 overall

Owner rating4.7/5

4.7 average across 20,600 owner ratings
Popularity4.9/5

20,600 owner reviews, more than most models here

The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other dog and cat food, health, gear and grooming we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.

Overview

['This Fresh Step formula is built around extreme clumping performance, meant to form firm, easy to scoop clumps rather than crumbly ones. It layers Mountain Spring scent and Febreze freshness together for odor coverage, and adds Ammonia Block technology to help manage the ammonia smell that builds up in multi cat boxes.', "It's also positioned as low dust and low tracking, addressing two of the most common complaints with clay based litters, cloud like dust when pouring and granules that get carried around the house on paws.", 'With 20,600 reviews and a 4.7 star average, plus roughly 10,000 units bought in the past month, this formula shows both a large review base and a high rating, suggesting the combination of features resonates with buyers.']

Pros

Extreme Clump formula designed for firm, easy to scoop clumps
Ammonia Block technology aimed at multi cat odor buildup
Low dust and low tracking claims address common clay litter complaints
Strong 4.7 star rating across 20,600 reviews

Cons

Mountain Spring scent plus Febreze freshness is a strong combined fragrance for scent sensitive households
Sold in two separate 18.5 pound boxes rather than one bulk bag
No unscented option within this specific listing

Performance notes

Extreme Clump is the core performance claim, designed to produce firmer clumps for easier scooping, while low dust and low tracking claims target the mess that typically comes with clay litter use. Ammonia Block technology and the Mountain Spring plus Febreze scent combination round out the odor control side of the formula.

What buyers say

A 4.7 star average across 20,600 reviews is a strong result at that volume, and around 10,000 units bought last month points to steady, ongoing demand rather than a one time surge.

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Frequently asked questions

What does Extreme Clump mean for this litter?

Extreme Clump refers to the formula's clumping performance, designed to form firm clumps that hold together for easier scooping compared to weaker clumping litters.

Is this litter heavily scented?

Yes, it combines Mountain Spring scent with Febreze freshness, so it has a noticeable fragrance layered on top of the clumping and odor control formula.

Does it help with dust and tracking?

It's marketed as low dust and low tracking, meaning it's formulated to reduce the dust cloud when pouring and the amount of litter carried out of the box on paws.