^aCIRAD, UPR Epidemiology and Ecology, TA 30/G, 34398 Montpellier Cedex 5, France

^bCIRDES, 01 BP 4541 Bobo-Dioulasso 01, Burkina Faso

^cCIRAD, UPR Disease Control, TA 30/G, 34398 Montpellier Cedex 5, France

^dDarlaten 23, 31600 Uchte, Federal Republic of Germany

^eCIRAD, TA 30/B, 34398 Montpellier Cedex 5, France

The in-stable efficacy of footbath treatments was compared with manual full spraying with a 0.005% alphacypermethrin (Dominex, FMC, Philadelphia, USA) formulation (250 mL versus 2 L). The proportions of knocked-down flies were the same with footbath and full spray but the latter was more protective against fly bites. In field use, the efficacy of both methods should be similar given the recommended treatment frequency: 3 days for footbath versus 7 days for full spray.

Among 96 cattle drinking at the same water point in Dafinso (Burkina Faso), 68 (71%) were treated with a footbath containing a 0.005% deltamethrin formulation (Vectocid, CEVA SA, Libourne, France). We observed the effect of this live-bait technique on the one hand on released cohorts of reared, irradiated flies, and on the other hand on wild tsetse flies. In both cases, the footbath treatment was associated with a reduction of the apparent fly density probably related to an increased mortality.