was followed with the aid of an infra red lamp and recorded in a protocol the experiment was repeated three times for each sample ______________________________________ treated area untreated area______________________________________head lice mean value 3 7body lice mean value 3 5 7 5______________________________________ it was concluded on the basis of these results that head lice and body lice are similarly repelled by the product body lice were reared in the laboratory by feeding them every 48 hours on rabbits lice were placed on the shaved abdomen of a white rabbit and left until they fed to satiety outside the host the lice were maintained at a temperature of 30 u00b1 1 u00b0 c and relative humidity of 70 u00b1 10 the abdomen of a new zealand white rabbit was shaved and 100 u03bcl of the test substance was evenly distributed over an area 2 5 u00d7 5 cm a glass cylinder 5 cm high with an internal diameter of 3 5 cm was placed on the rabbit 39 s abdomen so that one half of it was covering the treated area and the other half the adjacent untreated area 40 human body lice pediculus humanus humanus 20 adults and 20 nymphs which had been fed 24 hours previously were placed in the middle of the cylinder between the treated and untreated area and the cylinder was covered with a dark cloth in order to keep the test area in the dark the lice remained on the body of the rabbit for 5 minutes during which time over 95 of them had started feeding the number of lice found on the treated area was then recorded and.