Lab puppy eliminating in cage

Question
We have a 13 week old lab puppy who is very good about not eliminating in the house, but goes crazy in the crate (she is fine at night when we are all in bed). We have tried leaving her in there while we are home for a few minutes up to an hour (she urinated), we have left her in there when we went out for 1-4 hours (she poops/urinates and lays in it).
Today we had a sheet underneath the crate and when we came home it was completely in the crate chewed up and she had moved her crate back nearly a foot by slamming herself against the walls.

We have tried multiple approaches and nothing seems to work-any ideas?

Answer
It is only natural that a puppy resists its crate at first.  What the puppy
wants more than anything else is to be with others, you, anyone else in the
household, and any other pets.  In our modern society, even if we are home,
other things distract us from the attention an uncrated puppy must have.   The
only real solution is to crate the dog when you aren't around.  Leave it some toys.  Perhaps a Kong filled with peanut butter.  Don't leave anything in the crate the dog might chew up.  Rather than relaxing and catching a nap in their den, some puppies protest by fouling the crate, or it could be stress.  I haven't had this problem.  I do see many questions suggesting it, and saw my daughter fight the problem.  

A wire grid in the bottom of the crate will help keep the puppy up out of urine and to a lessor extent stools.  They are available with the crates, but expensive and hard to find.  A piece of closely spaced wire closet shelving from a home supply place is cheaper.  This reduces the mess, making the protest much less effective.  My rack fell apart after many puppies.  I used a vegetable bin with holes drilled in it at first with my now 5 month old Holly.  Here is a link to a picture of her in it, http://www.photolocker.net/images/Labman/hollyhighanddry.jpg  The longer haired the puppy, the higher it needs to be.  In warmer weather, you can just haul the crate out and hose everything off.  When the puppy sees you coping with the situation, and you stand your ground, most of them give up and learn to relax, and that you will return.  One more thing that may help is using a smaller crate, or blocking off part of a larger one so the puppy can't fouled one spot and retreat.  

The "shut the puppy in a safe room" is a fallacy.  Very few houses even have a
safe room.  How many of us have a room with a hard surfaced floor and nothing
else?  Most rooms have electrical cords to chew if nothing else.  In addition
to destroying anything a bored puppy finds to chew, it may choke or have
intestinal  blockage from the pieces.  I had a friend that left her dog in a
"safe" room.  It ate a hole in the floor covering.  The safe rooms fail to
give the dog the comfort of the enclosed space their instinct requires.  Nor
do they restrict activity extending the time the dog can go without relieving
itself.

Most puppies cry the first few nights in the crate.  You could try my remedy for that when you leave in the daytime.  What I do is lay down by the crate
like I was going to sleep there.  Usually a puppy may fuss a little, but then
settle down and go to sleep.  Once it is asleep, you can get up and leave.