How do you get rid of oil and grit in the spark plug well?

WITH THE PLUG STILL IN spray wd40 in the hole about 1\4 full scrap around in the hole with a small screwdriver let set for a little bit the fill the hole 1\2 full with wd40 let set and eather blow it out with a air hose or suck it out with a shop vac (you may need a minco cleaning end for the vac). Repeat as needed when the hole is clean break the plug free no more then a turn or two recheck for dirt in the hole. That what works for me.Russell Houghton NS Canada