At my old place I had garden centipedes really bad; found lots inside the house daily. I had to spray the perimeter of the house to get them under control, this took care of the earwigs also. I never had a problem with the earwigs even though I had lots of those as well; they stayed off of my plants and stayed down in the mulch.
I sprayed the mulched areas and beds around the house with Bayer Complete Insect Killer for Soil and Turf.
I know some people don't like to use chemicals but this is what worked for me. If I wouldn't have had a problem with the centipedes I wouldn't have bothered the earwigs.
