Corrected entry: The movie takes place in winter. With all the snow on the ground wouldn't the snow cause the gremlins to reproduce due to the water content. Even in Dory's bar, the gremlins spill beer and other drinks on themselves, don't those drinks also contain water?
Xofer
27th Aug 2001
Correction: The majority of liquids we consume contain some water. I think water must be fairly pure to make them reproduce, otherwise mogwais would either die of thirst or reproduce every time they drank something (liquid touching lips would cause reproduction).
Xofer