Indoor spraying with chlorfenapyr (a pyrrole insecticide) provides residual control of pyrethroid-resistant malaria vectors in southern Benin

Table 2 Results with wild free-flying pyrethroid-resistant An. gambiae s.l. mosquitoes entering IRS treated experimental huts in Cové, Benin

Hut treatments	Control	Alpha alone	Alpha + chlorfenapyr mixture formulations		Chlorfenapyr formulations				Positive control
Hut treatments	Untreated hut	FS4	FS2	FS5	FS1	FS7	HKI	Sylando^® SC	Bendiocarb
Females caught	6167	3488	4350	3383	3153	2563	2784	3187	3411
% Deterrence	–	43	29	45	49	58	55	48	45
% Exophily	50	100	98	94	80	79	78	71	96
95% conf. limits	48–51	99–100	97–98	93–95	79–81	77–80	77–80	69–72	96–97
N blood-fed	6141	3455	4325	3365	3079	2492	2771	3154	3353
% Blood fed	100	99	99	99	98	97	100	99	98
95% conf. limits	99–100	98–100	99–100	99–100	97–98	96–98	99–100	99–100	97–100
N dead 72 h	50	144	782	746	1243	1028	1044	1462	432
% Overall 72 h mortality*	1^a	4^b	18^c	22^d	39^e	40^e	38^e	46^f	12^g
95% conf. limits	0–2	3–5	17–19	21–23	38–41	38–42	36–39	44–48	11–13

*Values along this row bearing the same letter superscript are not significantly different (P > 0.05, logistic regression)

ISSN: 1475-2875