A laboratory evaluation of the effect of different concentrations of Termidor (fipronil at 9.09%) has been carried out. Six concentrations (10,000; 1,000; 100; 50; 10 and 5 ppm) have been tested in two different colony models imitating an open environment. After five days treatment, mortality data were collected. The three higher concentrations showed nearly 100% mortality. At 50 ppm the mortality rate was over 80%, but when using 10 or 5 ppm, 15 days were required to reach that mortality rate. The mobility was checked during the experiment. There was a normal walking ability in 5 and 10 ppm concentrations even after 5 days. This data can be useful when using Termidor in bait systems allowing the termites to carry it to their colonies without showing any symptoms.

Download document (367 kb)
free for the members of IRG. Available if purchased.

Purchase this document