I've  never really heard that the wood shavings in the bales are bad. I've used them to mulch my first garden and they're long gone. Can't see why they'd break down any different than any other. I dump them right in the compost with everything else.
I've used the chickens cleanings to mulch around trees with no trouble. Except for the chickens scratching them all up. I've even dumped the coop cleanings fright into the raised beds, Covered with garden soil and have had no trouble.  Though I do add peat moss and aged horse manure too. 
Course a good wet winter helps break things down. m I've dumped the coop cleanings around a tree, planted "road  lillies " and they've come up fine. 
I've also read that pine shavings are good around Raspberries too. 
Raspberries enjoy a couple-inch layer of mulch. Good mulches for use in the home garden include leaves, lawn clippings, and wood chips or shavings, because they are usually free of weed seeds.  From the Minnesota extension page.