Table 3.

Mean (%) number of cumulative mortality (SD±) of the German cockroach (Blattella germanica) for EL strain and IC strain.

Strain	Insecticide	Concentration (ppm)	Day
			Day 1	Day 3	Day 6	Day 9	Day 12	Day 15	Day 18
EL	Cislin® 25	1.90	0.00 ± 0.00a	13.33 ± 11.55ab	33.33 ± 11.55abc	60.00 ± 20.00bcd	80.00 ± 0.00b	100.00 ± 0.00b	–
		1.60	0.00 ± 0.00a	0.00 ± 0.00a	13.33 ± 11.55ab	46.67 ± 11.55bc	80.00 ± 0.00b	100.00 ± 0.00b	–
		1.30	0.00 ± 0.00a	0.00 ± 0.00a	26.67 ± 11.55abc	40.00 ± 0.00b	73.33 ± 11.55b	93.33 ± 11.55b	100.00 ± 0.00
		1.00	0.00 ± 0.00a	0.00 ± 0.00a	26.67 ± 11.55abc	40.00 ± 20.00b	66.67 ± 11.55b	93.33 ± 11.55b	100.00 ± 0.00
	Control		0.00 ± 0.00a	0.00 ± 0.00a	0.00 ± 0.00a	0.00 ± 0.00a	0.00 ± 0.00a	0.00 ± 0.00a	0.00 ± 0.00
	Sumithion 50	27.00	100.00 ± 0.00c	–	–	–	–	–	–
		23.00	100.00 ± 0.00c	–	–	–	–	–	–
		18.00	100.00 ± 0.00c	–	–	–	–	–	–
		14.00	100.00 ± 0.00c	–	–	–	–	–	–
	Control		0.00 ± 0.00a	–	–	–	–	–	–
IC	Cislin® 25	1.90	33.33 ± 30.55b	40.00 ± 20.00c	60.00 ± 20.00c	93.33 ± 11.55d	100.00 ± 0.00c	–	–
		1.60	6.67 ± 11.55a	26.67 ± 11.55bc	46.67 ± 11.55bc	80.00 ± 0.00 cd	100.00 ± 0.00c	–	–
		1.30	0.00 ± 0.00a	20.00 ± 0.00abc	40.00 ± 0.00bc	53.33 ± 11.55bc	80.00 ± 0.00b	100.00 ± 0.00b	–
		1.00	0.00 ± 0.00a	13.33 ± 11.55ab	36.67 ± 25.17bc	60.00 ± 20.00bcd	73.33 ± 11.55b	100.00 ± 0.00b	–
	Control		0.00 ± 0.00a	0.00 ± 0.00a	0.00 ± 0.00a	0.00 ± 0.000a	0.00 ± 0.000a	0.00 ± 0.000a	–
	Sumithion 50	27.00	100.00 ± 0.00c	–	–	–	–	–	–
		23.00	100.00 ± 0.00c	–	–	–	–	–	–
		18.00	100.00 ± 0.00c	–	–	–	–	–	–
		14.00	100.00 ± 0.00c	–	–	–	–	–	–
	Control		0.00 ± 0.00a	–	–	–	–	–	–

*Means within the same column with the same letter are not significantly different (P > 0.05).

*(-) No analysis conducted due to 100 % mortality of the sample.