Snail invasion!

We've come under the attack of snails! We've noticed many snails in our yard each morning for a few months. Each time we see them, we'd see about 7 or so snails. They seemed harmless enough, so we left them alone and just enjoyed watching them. However, we started noticing that many of our bushes were being eaten to shreds! We decided that we probably needed to start collecting them and move them to an uninhabited area. So, we began collecting the snails each morning and would gather about 7 each day. We were sure we were getting them all. Last night though, Jack decided to take a flashlight out to search the yard. He collected 88 snails in one night! These snails aren't little either. we couldn't believe the amount of snails. No wonder our yard was looking shabby. We decided that these snails must be a result of the huge snail we adopted last May. You might remember the story of the snail we found that the street sweeper tried to kill, but lived after a fierce ground thrashing. This snail must have been so greatful for our love and care that she decided to inhabit our yard and raise families! We won't be adopting anymore snails. This is now a nuisance!