water your yard real well just before night....you should be able to find smaller ones in the yard..as long as it's not being treated with any chemicals. we have what I always called angleworms....they are small, abouit 2-5 inches and thin. they don't have the purple heads that nightcrawlers do. they are easier for the snakes to eat....I usually can get a bunch after a heavy rain here during the day, or a long night of rain.