Comparison of Repellency Effect of Mosquito Repellents for DEET, Citronella, and Fennel Oil
Table 1
Repellency and CPT of 24% DEET against Aedes albopictus in laboratory test.
Untreated
Repellency (%) (±SE) at hours after treatment
CPT (min)
0~3 h
4 h
5 h
6 h
(%)
(%)
(%)
(%)
V1
20
0
100
0
100
0
100
0
100
Unknown
V2
10
0
100
0
100
0
100
1
90
360
V3
10
0
100
0
100
0
100
4
60
360
V4
25
0
100
0
100
0
100
1
96
360
V5
12
0
100
0
100
0
100
0
100
Unknown
V6
22
0
100
0
100
0
100
1
95.4
360
V7
11
0
100
0
100
0
100
0
100
Unknown
V8
15
0
100
0
100
0
100
0
100
Unknown
V9
13
0
100
0
100
1
92.3
2
84.6
300
V10
22
0
100
1
95.4
3
86.4
5
77.3
240
AVG
16 ± 1.71
0.0 ± 0.00
100 ± 0.0
0.1 ± 0.1
99.54 ± 0.46
0.4 ± 0.31
97.89 ± 1.49
1.4 ± 0.56
90.33 ± 4.16
301.45~401.55
The number () of mosquitoes landing on arm of each volunteer was counted per hour for 6 h. Repellency () was calculated each hour and complete protection time (CPT) was determined by calculating the number of minutes from the time of repellent application to the first mosquito landing.
