Releasing non-native species in your backyard is not a good idea. They can become major agricultural pests.
Gary
How long is the life span of Otala lactea? I let half a dozen go in my
Dad's yard (which is about the best snail habitat in peninsular Tampa)
about a year ago. He said he saw one of them a couple mornings ago. A
week after I released them, I found a couple of the shells which had
been emptied out by rodents. I assumed that they all had suffered the
same fate, but maybe one survived.