I received a free sling with my recent order of spiders,its a B. Angustum.I have it in a 2 inch vial with a couple inches of substrate.Problem is the little booger has burrwowed half way down the jar.I was told to feed it small freshly killed criks.Will it be able to find these with all the diging its doing?This is my first sling.and I really would like to see it thrive.