You know that spiders spin silk,but do you know what spiders with their silk? Mother spiders keep the eggs they lay in silk sacs. Spiders also use their silk to make webs or homes. Many spiders have hideouts in places such as window corners ir under sills. They line the entrances to these places with silk. Spiders also use silk threads to drop straight to the ground when enemies appear. And, of course, spiders can spin silken traps and nets to catch their dinner.