The effect of seven chemicals namely, diafenthiuron, carbosulfan, spinosad,
pirimicarb, chlorpyrifos, lufenuron and cyanophos were tested as poisonous baits
against M. cartusiana snails under laboratory conditions. Results revealed that
carbosulfan exhibited the highest efficacy, while chlorpyrifos was the lowest one. On
the other hand, six chemicals namely, methomyl, chlorpyrifos, lufenuron, spinosad,
copper sulfate and ferrous sulfate were evaluated against M. cartusiana snails under
field conditions in two fields cultivated with onion and broad bean at Abo-Hakim
village, Zagazig county. Results revealed that methomyl showed the highest effect
while spinosad was the lowest one. On the other side, five chemicals namely,
pirimicarb, carbosulfan, cyanophos, diafenthiuron and metaldehyde were evaluated in
three fields at Hehia county cultivated with lettuce intercropping on pepper, eggplant
and okra. Results revealed that metaldelyde was the highest toxic action while
cyanophos was the lowest toxic one against M. cartusiana snails in the two fields,
lettuce intercropping on pepper and lettuce intercropping on eggplant whereas the
third trial; it noticed that metaldehyde gave the highest order of toxicity while
pirimicarb exhibited the lowest one.