Cat Fountain Filter Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Veken is the best-performing cat fountain filter brand in July 2026, moving 50,000 units across 5 ASINs for 56.2% of Top 10 volume. PETLIBRO follows with 20,000 units (22.5%), ahead of GIOTOHUN on 6,000 units (6.7%).

With 6 brands splitting the Top 10 and 85.4% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $16.99 to $20.99, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B09K3FDCN9 booked 4K units at $10.49, with ▲ 33.3% MoM change. On the growth side, B0GYSD14HX leads positive momentum with ▲ 1900.0% MoM growth on 1K units, with B0CFJ2D6JW close behind at ▲ 200.0% MoM on 3K units.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.