I live in Southern California. I want to plant another tree in my backyard and am looking for suggestions on trees that would not be as attractive to squirrels as the ones that I have planted thusfar. I planted 2 liquid ambers and within weeks the squirrels had gnawed away large areas of bark. I have wrapped the trees in netting, hung blank CD's from the limbs and tried everything to deter them without much luck. Is there a tree out there whose bark would be less interesting for the squirrels to use as teeth sharpeners? I thought about a eucalyptis but don't know. Thanks.