I live in Tecumseh. Its very true. Soon as you cross that line into Windsor, you cannot own a frog! VERY illegal. Your animal WILL be confiscated if you are caught.
I'm not sure about the townships you mentioned, but since the bordering towns of Tecumseh and Lasalle don't have the reptile ban, I assume they don't either.
Herps have been banned for a very long time, so reptiles are largely unknown around here, there just wasn't the demand before for stores to carry supplies or books.
That is changing! The Windsor Petsmart has a very large herp aisle. Though they can't sell herps...