Table 4.
Competitive avoidance (%) of SF-HL females (10 lice per trial) on the glass arena with hair tufts treated with ddH2O, an attractant (1% feces), and a test formulation (OFF! Deep Woods Insect Repellent VIII, Elimax lotion, or Elimax shampoo)
| Trial 1 | Trial 2 | Trial 3 | Meana,b ± SD | |
|---|---|---|---|---|
| OFF! | ||||
| 30-min avoidance | 75.0 | 75.0 | 75.0 | 75.0 ± 0a |
| 60-min avoidance | 33.3 | 0 | 33.3 | 22.2 ± 19.2A |
| Elimax lotion | ||||
| 30-min avoidance | 33.3 | 100 | 57.1 | 63.5 ± 33.8a |
| 60-min avoidance | 75.0 | 75.0 | 57.1 | 69.1 ± 10.3B |
| Elimax shampoo | ||||
| 30-min avoidance | 57.1 | 75.0 | 75.0 | 69.1 ± 10.3a |
| 60-min avoidance | 75.0 | 57.1 | 33.3 | 55.2 ± 20.9A,B |
a A formulation is considered to be a competent deterrent to infestation when % avoidance is >50.0 %.
b 30-min avoidance means followed by the same lower-case letter are not statistically different by ANOVA (P > 0.05); 60-min avoidance means followed by the same upper-case letter are not statistically different by ANOVA (P > 0.05).
Comparative avoidance (%) = 100 – [{(n1/N)/(n2/N)} × 100], where N = total number of lice; n1 = total number of lice on the attractant- and deterrent-treated hair tufts; n2 = number of lice on the ddH2O-treated control hair tufts (Fig. 2).