Table 2.

Persistence of deltamethrin with/without piperonyl but oxide on thatch surface against Anopheles stephensi, 2015–2016

Days after spraying	Concentrations												Control
	Concentration 1			Concentration 2			Concentration 3			Concentration 4
	Total	Dead	Mortality ±SE	Total	Dead	Mortality ±SE	Total	Dead	Mortality ±SE	Total	Dead	Mortality ±SE	Total	Dead	Mortality
1	50	50	100.0 ± 0.0	51	51	100.0 ± 0.0	49	48	98.0 ± 2.0	51	46	90.2 ± 3.6	40	3	7.5
5	51	50	98.0 ± 2.0	50	45	90.0 ± 3.2	50	50	100.0 ± 0.0	51	51	100.0 ± 0.0	40	5	12.5
15	50	50	100.0 ± 0.0	50	47	94.0 ± 2.5	50	47	94.0 ± 2.5	50	49	98.0 ± 2.0	40	2	5
30	50	43	86.0 ± 1.6	49	46	93.9 ± 4.0	49	46	93.9 ± 4.0	49	43	87.8 ± 3.7	40	2	5
45	51	42	82.4 ± 3.6	50	40	80.0 ± 3.2	50	40	80.0 ± 3.2	50	38	76.0 ± 2.0	40	3	7.5
60	50	38	76.0 ± 1.3	50	41	82.0 ± 1.9	50	41	82.0 ± 1.9	51	41	80.4 ± 4.6	40	2	5
75	50	33	66.0 ± 5.6	50	38	76.0 ± 4.2	50	38	76.0 ± 4.2	50	36	72.0 ± 6.7	40	4	10
90	50	21	42.0 ± 2.3	50	37	74.0 ± 3.0	50	32	64.0 ± 2.8	50	33	66.0 ± 9.4	40	0	0
105	52	23	44.2 ± 2.6	50	28	56.0 ± 1.9	50	28	56.0 ± 1.9	50	28	56.0 ± 4.2	40	1	2.5
120	51	23	45.1 ± 7.5	50	25	50.0 ± 2.8	50	25	50.0 ± 2.8	40	19	47.5 ± 3.3	40	2	5