Lee is seriously pulling your leg. The instructions are printed under the tail!
Since hide glue is water based the wood will absorb it nicely as long as there is no oil or grease on the surface. You can wash with acetone, or a drop or two of Dawn dishwashing soap in a pint of water. I've even washed the back of a bow with a slurry of hardwood ashes and rainwater. In any case, a little sandpaper after the washing will take down the "whiskers" raised by the water.
Good luck.