Orgone Crystals are said to ward off Reptiles and/or getting 'scalped'
Not convinced of the voracity of this explanation, but "Law of One" channelings speak to Walk-Ins and Walk-Outs, so technically they appear to be similar - though likely lacking permission of the host in this case....
Here's a thread on it: http://www.abovetopsecret.com/forum/thread1239180/pg1