From: Speed of flea knockdown of spinosad compared to afoxolaner, and of spinosad through 28 days post-treatment in controlled laboratory studies
Control
Spinosad
Geometric mean (SE)
89.4 (0.1)
1.3 (0.5)
% Efficacy
-
98.6 %b
Arithmetic mean (SD)
90.6 (14.1)
4.30 (9.3)
95.3 %a