However, the holes need to be deep enough for the bees to be safe from bee-eating birds. Otherwise, the log will instead function as a bee trap, allowing a bird to pick off one helpless bee after the other.

[0]https://gardenbetty.com/carpenter-bees/

I have carpenter bees, mason bees, bumblebees, honeybees, wasps, etc including bees of every size. I also have planted my property in native plants and wildflowers to make sure these native insects have a place to hang out. I provide water for insects and wandering animals using washtubs with stacked rocks and solar powered fountains to discourage algae. I think that you could improve your chances of keeping the bees without them destroying your siding or trim if you follow the guidance about bee house placement.

You can make a bee house block or buy one that will attract multiple native bees and they will use it for years. Here is one option with additional info about carpenter bees.[1]

[1]https://www.thewallednursery.com/do-carpenter-bee-houses-wor...

The holes in the bee house need to be about 1/2" (12-13mm) if you are attracting carpenter bees. For mason or orchard bees they should be smaller, 3/16" to 5/16" (5-7mm).