+2 on the pressure washer, did a munjac skull at college and we all did a bit with pliers, wire ect then got bored and got the pressure washer out took about five mins with the washer on it, as Jamross says go easy round the pointy end and keep your mouth closed and wear water proofs, but I found I could put the nozzle of the washer right into the nasal cavity and blow all the gunk out pretty easily with no damage to the nasal bones.
Works a treat