Drain Fly Killer Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

ZEVO is the best-performing drain fly killer brand in July 2026, moving 380,000 units across 5 ASINs for 66.7% of Top 10 volume. Terro follows with 60,000 units (10.5%), ahead of GOOTOP on 50,000 units (8.8%).

With 6 brands splitting the Top 10 and 86.0% 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 $11.94 to $33.29, 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: B079K94HHV booked 20K units at $25.97, with ▲ 0.0% MoM change. On the growth side, B0DGWQV8GK leads positive momentum with ▲ 300.0% MoM growth on 4K units, with B0D5DJ7V4P close behind at ▲ 100.0% MoM on 20K 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already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date.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.