PawExact

Exact standard-clay comparison

Ever Clean vs Dr. Elsey’s Ultra in Litter-Robot 4

Ever Clean has one positive switch report; Dr. Elsey’s Ultra has two long-term LR4 reports that conflict on wet clumps and liner sticking.

Decision rail

Four checks, in order

Passing one check does not override a failure or unknown in the next. This is a compatibility decision, not a popularity ranking.

  1. 01Class

    Recognize the shared preferred fit

    The same class-level match cannot resolve formula additives, particle shape, or household results.

  2. 02Time

    Do not equate unknown duration with long-term use

    The Ever Clean switch report and the two Ultra histories carry different observation depth.

  3. 03Conflict

    Keep both Ultra outcomes

    Opposite independent reports are not averaged away or selected to create a cleaner recommendation.

  4. 04Decision

    Observe the failure mode you need to solve

    Track streaking, liner release, clump moisture, dust, and floor particles independently.

Evidence transfer ledger

How far this evidence can travel

A report stays attached to the identity and conditions it actually names. Each unresolved mismatch stops transfer; similarity alone does not fill the missing field.

Exact package

Ever Clean Extra Strength Unscented and blue-bag Ultra stay distinct

Can support
The named formula and its own accepted source history.
Stop transfer when
An unscented label or broad clay class is used to move a result between products.
Time horizon

Keep Ever Clean duration unknown and Ultra histories dated

Can support
A positive switch observation alongside two longer, conflicting Ultra accounts.
Stop transfer when
An undated period after switching is treated as evidence of long-term stability.
Ultra conflict

Preserve both strong-clumping and wet-sticking accounts

Can support
A conditional conclusion for Ultra rather than selecting the favorable or unfavorable report.
Stop transfer when
The two histories are averaged into a score or one is erased to create a winner.
Outcome location

Separate globe streaks, liner adhesion, visible dust, and floor grains

Can support
The specific checks owners described or omitted.
Stop transfer when
No streaks is interpreted as proven no sticking under another home's conditions.
Switch context

Keep the prior formula and setup unknown unless documented

Can support
A narrow account of what changed in one household.
Stop transfer when
The Ever Clean result is credited solely to formula when fill, delay, liner, or cleaning may also have changed.

Source continuity review · 2026-10-15

Can the older evidence describe today's bags?

This editorial check joins dated manufacturer-source status to already accepted exact-product records. It is not a new PawExact test, a rereading of old household posts, or proof of formula continuity.

Dated source state
Both current manufacturer product pages were read on October 13 and retained the named formulas; neither page maps today's bag to the older household lots.
Exact evidence unit
Ever Clean has one positive switch observation with unknown duration. Ultra has two independent, longer accounts in opposite directions; no single average resolves them.
First comparison
Confirm Extra Strength Unscented and blue-bag Ultra, then record clump moisture and liner release before comparing dust or floor grains.
Stop transfer when
A current product title cannot establish unchanged formula or make the one Ever Clean observation a controlled result against either Ultra household.
Exact product profileEver Clean source recordExact product profileUltra source record

Published boundary

What Litter-Robot actually says

These statements describe classes and limits. They are not PawExact tests and do not automatically approve every product using the same marketing term.

OfficialLitter-Robot 4
“We recommend a high-quality, standard-weight, clay-based clumping litter”
Official source
OfficialLitter-Robot 4
“Litters that do not work in Litter-Robot are the strictly absorbent, non-clumping or loose-clumping litters, newspaper-based litters, and absorbent wood pellet litter.”
Official source

Exact-product records

Products that show why the class label is not enough

The Ever Clean signal comes from one post-switch observation. Ultra has two independent, longer-context reports with opposite directions; conflict must remain visible.

Single report1 public report

Extra Strength Unscented

Ever Clean

Material
Clay
Clumping
Clumping
Weight
Standard

One owner reports no streaks, dust, or tracking after switching, while observation duration and cat count remain unknown.

Likely compatible

Read exact record
Single report2 public reports

Ultra Unscented Clumping Clay

Dr. Elsey's

Material
Clay
Clumping
Clumping
Weight
Standard

One year-long report is positive; another multi-year, four-cat, three-machine household reports wet sticking clumps.

Compatible with conditions

Read exact record

Before a larger purchase

A small, observable first-use check

This is not a controlled test protocol. It is a way to notice an obvious mismatch before treating one successful cycle as proof.

  1. Check 1Match Ever Clean Extra Strength Unscented or Dr. Elsey’s blue-bag Ultra exactly.
  2. Check 2Record cats, machines, use duration, fill, delay, humidity context, and cleaning before comparing.
  3. Check 3Inspect wet clump adhesion before changing liner treatment or cycle timing.
  4. Check 4Do not present a positive switch sequence as proof that one product is universally superior.

Known limits

What the current evidence cannot prove

  • Ever Clean has only one accepted report and no stated observation duration.
  • Ultra’s conflicting reports do not standardize household load, humidity, delay, liner condition, or package batch.
  • PawExact has not run a controlled comparison or measured clump moisture and adhesion.

Evidence readiness

What this guide can support today

This checkpoint separates a useful answer from claims the current official rules and exact records still cannot support. It is an editorial evidence review, not a PawExact test.

Question scope
This guide compares Ever Clean Extra Strength Unscented with Dr. Elsey's Ultra in LR4, preserving sticking and dust as separate observations. It does not recommend either brand universally.
Direct official boundary
Both products are recorded standard-weight clay clumping formulas, LR4's preferred starting class. That class rule cannot choose between exact formulas or resolve the conflict within Ultra reports.
Exact-product evidence
Ever Clean has one positive post-switch accepted report with unstated duration. Ultra has one positive year-long report and another multi-year, multi-cat sticking report; the latter two remain visibly conflicting.
Remaining gap
A post-switch account is not a controlled trial, and the three households differ in load and duration. The comparison overlaps exact product pages; neither prevalence nor independent demand is known.