Table 4

Knockdown and mortality rates of An.gambiae exposed on nets repeatedly washed using WHO procedure and two local washing methods; hand rubbing and beating on rocks

Net type

Machine wash

Hand wash

Washing on Rocks

Conventional

% Knockdown

% Mortality

% Knockdown

% Mortality

% Knockdown

% Mortality

Unwashed

100

97

100

97

100

97

5X

35

30

40

41

30

28

10X

35

20

35

18

20

15

15X

15

14

10

6

7

4

20X

13

12

4

1

2

0

Olyset

Unwashed

100

100

100

100

100

100

5X

30

45

45

50

27

34

10X

20

20

23

23

15

8

15X

15

10

11

18

11

2

20X

8

10

6

6

3

1

PermaNet

Unwashed

100

100

100

100

100

100

5X

95

93

82

94

91

75

10X

91

90

82

87

85

68

15X

85

86

75

79

50

50

20X

68

70

50

72

46

44

BASF

Unwashed

100

100

100

100

100

100

5X

91

93

86

90

89

82

10X

85

85

86

72

78

61

15X

65

70

46

69

26

20

20X

50

60

38

43

22

13

TNT

Unwashed

100

100

100

100

100

100

5X

85

86

83

83

55

60

10X

78

80

76

57

38

9

15X

55

61

72

26

21

6

20X

15

30

14

17

7

4

Atieli et al. Malaria Journal 2010 9:248   doi:10.1186/1475-2875-9-248