Flatworms

Do you think they were attracted to the newspaper and, if so, is it worth laying more down to attract them?

I think the fact that below the newspaper it dark and damp would bring them to it, one way of catching them is to soak an area then cover with black plastic, so the similarities would mean that they would use it, I intend to use a wet newspaper from now on, if it happens to get blown away it would cause less damage