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PetSafe Oasys 64 oz vs Drinkwell Stainless Multi-Pet: Which Should You Choose?

The Oasys is the 64 oz option with one adjustable free-falling stream plus an open bowl. The Stainless Multi-Pet lists 128 oz capacity, 360-degree access, and five interchangeable spout rings for one-to-five-stream configurations. Choose by stated capacity and drinking layout; neither is shown to perform better in testing.

Published by Pickoryx · Published 2026-10-14

Source checked 2026-10-14 23:43 UTC

Products compared

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The buying question

Do you need the Oasys 64 oz format, or does the Drinkwell Stainless Multi-Pet’s larger reservoir and multiple stream attachments better fit your household?

The Oasys is the smaller-capacity option with one adjustable free-falling stream and an open bowl; the Stainless Multi-Pet doubles the stated reservoir capacity and offers 360-degree access with five interchangeable spout rings for one-to-five-stream configurations. Both require hand washing the pump and allow top-rack dishwashing of the fountain body.

Quick verdict

When to skip: You need a fountain that does not rely on a powered pump or plug-in setup; both listed models use a submersible pump and wall adapter.
When the recommendation changes
  • The answer changes with the amount of water your household needs between refills and whether you value a single stream or several attachment choices; actual refill intervals depend on use and are not measured here.

The differences that matter

Reservoir And Drinking Access For Household Size

PetSafe Oasys Pet Fountain (64 oz)

64 oz capacity; an open bowl and one free-falling stream provide two documented drinking areas.[1]

PetSafe Drinkwell Stainless Steel Multi-Pet Fountain (128 oz)

128 oz capacity; a 360-degree design is described for access around the fountain, including several pets drinking at once.[2]

What this changes: The larger stated reservoir and shared access may suit a household choosing those specifications, while the 64 oz model is the smaller-capacity choice. These specifications do not predict refill frequency for an individual home.[1, 2]

The better fit depends on your priorities

Stream Configuration And Maintenance Workflow

PetSafe Oasys Pet Fountain (64 oz)

One adjustable free-falling stream, with the open bowl also available for drinking. The fountain body is listed as top-rack dishwasher safe; hand wash the pump.[1]

PetSafe Drinkwell Stainless Steel Multi-Pet Fountain (128 oz)

Five interchangeable spout rings are included to choose a one-to-five-stream configuration; flow is adjustable. The stainless fountain body is listed as top-rack dishwasher safe; hand wash the pump.[2]

What this changes: Choose according to whether one stream plus a bowl or multiple attachment configurations better fit your setup. The listed body and pump care are similar, so the sources do not establish a cleaning-effort winner.[1, 2]

The better fit depends on your priorities

Best for your routine

A household whose priority is a larger stated reservoir and access around the fountain

Best fit: PetSafe Drinkwell Stainless Steel Multi-Pet Fountain (128 oz)

Based on listed features, not comparative testing.

The Stainless Multi-Pet lists 128 oz and 360-degree access, compared with the Oasys 64 oz capacity. This is a feature-fit choice, not evidence of a particular refill interval or pet preference.

View PetSafe Drinkwell Stainless Steel Multi-Pet Fountain (128 oz) on AmazonPaid link

A household that prefers one adjustable stream and an open bowl in the smaller 64 oz format

Best fit: PetSafe Oasys Pet Fountain (64 oz)

Based on listed features, not comparative testing.

The Oasys lists a 64 oz capacity, one adjustable stream, and an open bowl.

View PetSafe Oasys Pet Fountain (64 oz) on AmazonPaid link

Value and trade-offs

One or both observed offers have eligibility conditions, so no unrestricted price difference is shown.

A price difference should be weighed against the capacity and drinking-layout features that matter to your home; no stable premium is stated here.

Price history was not assessed, so timing guidance is unavailable.

Limitations

  • Manufacturer specifications describe capacity and configuration, not measured refill intervals, noise, pet preference, cleaning effort, or comparative performance.
  • Both official product pages list the body as top-rack dishwasher safe and the pump as hand-wash only; neither source establishes a cleaning-effort advantage.
  • Confirm the selected offer’s model, capacity and color before ordering; this comparison does not make a recommendation based on color.

Questions shoppers ask

Does the larger fountain automatically mean fewer refills?

Not necessarily. PetSafe lists 64 oz for the Oasys and 128 oz for the Stainless Multi-Pet, but refill timing depends on water use and was not measured for this comparison.

Is one easier to clean?

The official pages give the same basic care direction for both: top-rack dishwasher-safe fountain body and hand-wash pump. The documented stream attachments differ, but no comparative cleaning-time evidence was found.

Methodology and sources

Compared the capacity, drinking access, stream configuration, included attachments, and manufacturer-listed care instructions on the exact-model PetSafe pages. The recommendation is feature-fit only; the pages do not establish refill intervals, pet preference, cleaning-time differences, noise, or comparative performance.

AI-assisted research and writing; product performance was not independently tested.

View 2 sources
  1. 1.Oasys™ Pet Fountain | PetSafe®PetSafe · Official specifications · Source checked 2026-10-14 23:43 UTC
    Evidence used on this page
    • Product page: 64 oz option; features; cleaning; what’s included: Exact Oasys product page identifies the 64 oz option, one adjustable free-falling stream plus open-bowl drinking, plastic construction, top-rack dishwasher-safe fountain body, hand-wash pump, and included filter/pump/adaptor.
  2. 2.Drinkwell® Stainless Steel Multi-Pet Fountain | PetSafe®PetSafe · Official specifications · Source checked 2026-10-14 23:43 UTC
    Evidence used on this page
    • Product page: 128 oz capacity; 360-degree access; five spouts; care; what’s included: Exact model page identifies 128 oz capacity, 360-degree access, five stream attachments, adjustable flow, top-rack dishwasher-safe fountain body, and hand-wash pump.

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