Our results show that the water and ethanol extracts of pumpkin seeds have a significant molluscicidal activity. The results further showed that there was no significant difference between the survival rates of juvenile and adult Biomphalaria snails exposed to water extracts (p = 0.208; CI = 95%). Pumpkin seeds water extract also had a molluscicidal activity against Bulinus snails. There was no significance in the difference of species exposed to the water extracts (i.e. Biomphalaria and Bulinus) (p = 0,665; CI = 95%. It was also observed that there was no significant dependence of mortalities on the time of the exposure of snails to the extracts (Figs 1 and 2). This observation was made for all the snail classes used in the study.