I often skip several days of feeding with my BSF units. Since they can't easily escape they just have to wait for the next batch of food.
From what I read BSF can adapt to a wide range of conditions. If you're worm bin is outside you might also get BSF laying eggs on it. Even a tiny gap will allow the newly hatched larvae to enter the bin. People who raise worms often find BSF in with them.
I wonder how late in the year our Georgia BSF will lay eggs.