Water extracts from four wild plant species namely:Azadirachta indica, Neriu oleander, Calotropis procena, Urginea maritime(different parts: leaves, stems and flowers) were tested against two widely land snails species, i.e. Monacha cartusiana and Theba pisana under laboratory conditions. The concentrations used were crude extract 1:1 and the diluted 1:3 and 1:10. All the treatments were sprayed directly to the snails or sprayed to the lettuce leaves which used as poisonous food. Moreover, the grinded parts of these plants (leaves, stems and flowers) were used separately for testing their active ingredients. The obtained results indicate that using some plant water extracts as spraying technique was more efficient against land snails than in its addition to lettuce leaves as poisonous foods or using the grinded plant parts itself.