Gilbert B, Castleton C, Bulhões M S
Bull World Health Organ. 1973;49(4):377-9.
Trifenmorph granules provided 100% control of Biomphalaria glabrata and B. tenagophila when applied at 2 kg of active ingredient per hectare, except at one site with a pH of 5.6 where the snail population was reduced by only 50%. Granulation was found to facilitate application by either hand or mistblower, and reduces the risk of infection to the spray team. Applied to canal margins the granules had a residual toxic effect.