Host odours increased the trap catches of Glossina fuscipes fuscipes in cattle breeding areas of the Central African Republic. The increase was significant with zebu urine (x 1.4) and the principal reptilian host, the monitor lizard (x 1.7). The greatest effect (x 4.2) was obtained for male G f fuscipes with zebu urine when the densities of flies were low (less than 5 males per trap per day). It seems that olfactory baits in urine could improve the control of G f fuscipes by trapping. Reptile odour contains attractants that should be identified.