they may not look nice but they are big helpers (most of the time). However, if you are concerned about the food web in your compost pile "breaking out," try the following tips:

1. Create a barrier by spreading a line of wood ash (not barbecue ash because of fat residues) or crushed egg shells around your compost pile. This will keep the activity contained within the pile.
2. A similar, but more lethal technique, is to sink small margarine containers full of stale beer, molasses and water, or yeast and water in the ground around the compost pile. Unsuspecting slugs, sow bugs, and earwigs will be attracted to the liquid, crawl inside, and drown.

Earwigs can be sprayed with a solution of one tablespoon of liquid soap detergent combined with one quart of water. This will kill the earwigs that are doing damage and spare the helpful bugs that are eating dead organic material.
(information from California Integrated Waste Management Board)