[1][2][3] It works by inhibiting complex III in the mitochondrial inner membrane and leads to a halting of oxidative phosphorylation (IRAC class 20A).

Some brands of hydramethylnon are Amdro, Blatex, Combat, Cyaforce, Cyclon, Faslane, Grant's, Impact, Matox, Maxforce, Pyramdron, Siege, Scuttle and Wipeout.

Hydramethylnon is a slow-acting poison with delayed toxicity that needs to be eaten to be effective.

[4] Hydramethylnon is toxic to fish; the 96-hour LC50 in rainbow trout is 0.16 mg/L, 0.10 mg/L in channel catfish, and 1.70 mg/L in bluegill sunfish.

Hydramethylnon, when fed to rats for two years, led to an increase in uterine and adrenal tumors at the highest dose; therefore, the Environmental Protection Agency classifies hydramethylnon as a possible human carcinogen.