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Clean water, every month

Monsef Filter Refills (6-Month Pack)

Six filters, one swap every four weeks. Fresh water for half a year without thinking about it.

6 filtersin the pack
6 monthsone every 4 weeks
2 layersmesh + carbon
Exact fitMonsef fountain
$49.95 $29.95 Save $20.00Add-on price with your fountain
Order today, arrives in 6-12 business days
Free US shipping over $50
30-day money-back
Tracked delivery
Real people answer
  • ✓Six filters. One every 4 weeks, half a year covered.
  • ✓Carbon plus fine mesh. Keeps taste neutral and fur out of the pump.
  • ✓Made for the Monsef fountain. Drops right in.
✓ Secure checkoutReturns & shipping details
How to swap a filter
  • Lift off the top tray.
  • Pull out the used cartridge.
  • Rinse the new one under the tap for a few seconds.
  • Slide it in and put the tray back. That's it until next month.
Specifications
In the pack6 filter cartridges
Lasts6 months (one every 4 weeks)
LayersFine mesh (fur and debris) + activated carbon (taste and odor)
FitsMonsef Wireless Stainless Steel Cat Fountain
Cost per monthAbout $4.99
Shipping & returns

Orders ship in 1-2 business days and arrive in 5-10 business days across the US, with tracking. Shipping is free over $50 ($4.95 below that).

Not a fit? Contact us within 30 days of delivery for a full refund. Read the full policy

Fresh water, every month

One swap every 4 weeks

Swap every 4 weeks
Takes under a minuteLift the tray, pull the old cartridge, slide in the new one.
Filter layers
Two layers, two jobsFine mesh catches fur and debris. Activated carbon keeps taste and smell neutral.
Monsef Filter Refills (6-Month Pack)
The details

Filter Refills (6-Month Pack)

Six replacement filters made for the Monsef fountain: activated carbon plus a fine mesh that catches fur and debris before they reach the pump.

  • One filter every 4 weeks keeps taste and smell neutral.
  • Fur stays in the filter, not in the pump.
  • Cheaper per month than most fountain brands charge.
The math

Filters that don't cost a subscription

The sticker price is one number. What you spend on filters every year is the other.

Monsef filters
$4.99 / month
$29.95 for 6 months. About $59.90 a year. No subscription to cancel.
Typical filter subscription
$20–30 / month
What several fountain brands charge for monthly filter plans. Up to $240–360 a year.

Based on public filter subscription prices from other cat fountain brands, October 2026.

Our promise

Try it for 30 days. If your cat says no, so can you.

Cats are picky. We get it, so the risk is on us.

30-day money-backIf it's not a fit, contact us within 30 days of delivery for a full refund.
Made to fitDesigned for the Monsef fountain, so there is no guessing on sizes.
Real people answerWrite to hello@monsefpetcare.com and a person on our team gets back to you.
Complete the setup

Goes well with it

Monsef Wireless Stainless Steel Cat Fountain (3L)
Wireless Stainless Steel Cat Fountain (3L)$69.95 $139.90See it →
Monsef Anti-Splash Silicone Mat
Anti-Splash Silicone Mat$19.95 $29.95See it →
Before you order

Questions, answered

Which fountain do these fit? +

They are made for the Monsef Wireless Stainless Steel Cat Fountain.

How often do I change the filter? +

Every 4 weeks. One 6-month pack covers half a year.

How fast does it ship? +

Orders are processed in 1-2 business days and delivered in 5-10 business days across the US, with tracking. Free shipping over $50.

Is this a medical product? +

No. It makes drinking more appealing. For health concerns, talk to your vet.

✓ 30-day money-back · Free US shipping over $50 · Secure checkout
$29.95