google bot keeps hitting admin

Hi

a google bot keeps hitting our wordpress site trying to access files that it shouldnt be, mainly admin URLs

We cant block it or work out a way to stop it. Its happen constantly and causing load drain on cpu. See below errors.

[access_compat:error] [pid 3576339] [client 66.249.75.150:52169] AH01797: client denied by server configuration: /home/XXX/public_html/wp_content referer