Table 2. Classification of antifeedant activity levels

Mortality (%)	Activity level	Symbol
M ≥ 95	Very strong	A
75 ≤ M & 95	Strong	B
60 ≤ M & 75	Fairly strong	C
40 ≤ M & 60	Moderate	D
25 ≤ M & 40	Slightly weak	E
5 ≤ M & 25	Weak	F
M & 5	Inactive	G

M: mortality.