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AONBOY S3-12+12 Cat Fountain Filters, 12 Filters and 12 Sponges

AONBOY S3-12+12 cat fountain filters are replacement cartridges and pre-filter sponges listed for the AONBOY S3-SC stainless-steel fountain. The set includes 12 carbon filters and 12 sponge filters, with a layered design intended to catch larger debris and reduce odours. Compatibility is model-specific, so check your fountain before ordering.

At a glance

  • Set contains 12 carbon filters and 12 sponge pre-filters, according to the listing.
  • The sponge is described as catching larger debris such as hair and food particles.
  • The carbon-filter layers are described as including cotton, activated carbon and ion exchange resin.
  • Listed as compatible with the AONBOY S3-SC 108oz/3.2L fountain.
Price
$26.99Save 10%

Reference price: $29.99

Price checked: Nov 12, 2026

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Often bought together

Pros and cons

Pros

  • A 12-and-12 replacement supply provides separate sponges for pre-filtering larger debris and carbon filters for the fountain’s deeper filtration stage.
  • Customer feedback reports good fit and straightforward filter changes, which may be useful for routine replacement.

Technical specifications

6 specifications
Identity
BrandAONBOY
ModelS3-12+12
Power and configuration
Power configurationGravity Powered
Dimensions and installation
Dimensions listed23 x 23 x 11.8 cm; 230 g
Weight listed230 g
Materials and components
Material listed12 Filters +12 Sponges

What to know before buying

  • Soak and rinse each filter for 5 minutes before use. The listing recommends replacing carbon filters every 2–4 weeks and sponge filters every 1–2 months.

Listing details to confirm

The listing describes this as a filter-and-sponge set, but its included-components field says “Plug.” Its colour and material fields also conflict with the product being replacement filters. Confirm the selected listing and contents before ordering.

What’s in the box

  • 12 carbon filtersCheck selected pack
  • 12 sponge filtersCheck selected pack
  • PlugCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

  • Owners of the AONBOY S3-SC fountain seeking its listed 12-filter, 12-sponge replacement set.
  • Cat owners who want a separate sponge stage for catching larger debris before water passes through the deeper filter.

Less suited to

  • Owners of fountains other than the stated S3-SC model unless they have confirmed compatibility.
  • Buyers looking for a complete water fountain rather than replacement filter parts.
AONBOY S3-12+12 Cat Fountain Filters, 12 Filters and 12 Sponges · photo 2
Additional product photo 2

Customer reviews on Amazon

4.8 / 5 · 800 ratings
  • 5 stars85%85%
  • 4 stars10%10%
  • 3 stars4%4%
  • 2 stars1%1%
  • 1 star0%0%

Customer feedback reports positive impressions of fit, filtration, ease of changing filters and perceived quality. Those points matter for a replacement set that must match the fountain and be changed periodically. The listing’s stated S3-SC compatibility and replacement intervals are product claims, not proof of performance, and the available feedback summary does not establish results for every fountain or household.

Positive themes

  • Customers are reported to appreciate the fit and ease of changing the filters.
  • The feedback summary describes positive impressions of filtration and product quality.

Frequently asked questions

Which fountain is this set listed for?

The listing names the AONBOY S3-SC stainless-steel cat fountain, described as 108oz/3.2L. Check your fountain model before ordering.

What is included in the filter set?

The product title and feature text describe 12 carbon filters and 12 sponge filters. The included-components field separately says “Plug,” so confirm the package details on the selected listing.

How often should the filters be changed?

The listing recommends changing the carbon filter every 2–4 weeks and the sponge filter every 1–2 months.

Should the filters be rinsed before use?

Yes. The listing recommends soaking and rinsing the filter for 5 minutes before use.

AONBOY S3-12+12 Cat Fountain Filters, 12 Filters and 12 Sponges · photo 3
Additional product photo 3

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