I have several tons delivered every year by local tree surgeons. Some folk trot out the old wives tale " it depletes nitrogen " NOT when it's used as a mulch, and , according to the RHS , even if dug into the soil the "depletion" is minimal and has no detrimental effect on plants.
The downside is it also makes a good cats' toilet. Just so you know to look out for it.
Any suggestions of how to discourage the blighters?