I'd follow Jeff's solution overall, but a few things I've done when working with a table as a queue. Note, these may or may not apply for your situation. Hard...

Another vote for disable and use something else, excluding SQL data/log/backup folders.

I have typically tried to keep 3 backups where possible. One on the local machine, one remote, one archived offsite. These days the local one probably isn't a big deal...

Well, I've been working at home for 14 years and I've yet to find myself looking at pictures of kittens.

I haven't had the issues where someone thinks I'm...

Or set the dbs to restricted_user if you app login doesn't have permissions to access them this way. Drain off the connections and do the log backup