#carbon filtration

PetSafe Drinkwell Replacement Carbon Filters Review – 12 Pack Honest Verdict

I tested the PetSafe Drinkwell Premium Replacement Carbon Filters over six weeks with two cats and a Zen fountain. Here's my honest take on filtration performance, value per filter and whether the 12-pack is the smarter bulk buy. Spoiler: there's one thing nobody tells you in the listings.