Most likely. Bats will commonly rest in between feeding and sometimes this can present a problem if it's on a home or other man made structure. 4-THE-BIRDS LIQUID or GEL applied to the areas where they are roosting will chase them away for sure. You might also consider the BAT SCREENING or BAT NETTING featured in our BAT CONTROL ARTICLE. All of these will keep them away; the cedar is easy for them to cling to so they're just taking advantage of what they have found.