Furdew Replacement Filters for 3L Pet Fountain | 4-Pack Carbon Filter Cartridges

• Made for the Furdew 3L Fountain — Drop-in fit, no trimming, no guessing. If it's a Furdew 3L stainless steel fountain, these fit.

• Triple-Layer Filtration — Activated carbon catches chlorine and odors. Ion exchange resin softens hard water. Fine mesh grabs hair and debris before they ever reach the pump.

• One Pack Covers About 3 Months — Swap a cartridge every 2–3 weeks; every 2 weeks in multi-pet homes. Four cartridges keep one cat going roughly a full quarter.

• Why Swapping on Schedule Matters — A spent filter stops catching anything and makes the pump work harder. Fresh carbon is the difference between water they actually drink and water they walk past.

• Rinse Before First Use — Hold the cartridge under cold running water for about 30 seconds to wash off carbon dust. Drop it in, fill, and you're done.

Subscribe and save 20% — set it once and never think about it again.