any chance of pictures? The characteristics of the holes help us name the culprit(s)

Earwigs, like many other insects, need a cool, moist environment to live and grow in, one reason they are normally night time garden visitors. Earwigs, with an omnivourous diet, cna be beneficial as well as pests and more often then not people will assume the damage they see is from earwigs when other thingys have really caused it.
Garlic sprays will deter these wee buggers if needed, although some prefer the different traps (not as effective) so their garden does not smell like a pizza parlor.
This link may be of some help.

Here is a link that might be useful: Earwigs