Or are you one of those owners that ignore the note and hope that someone else will fix the problem?
One of the things about being a cache owner is the constant maintenance of what you hide. It is not the responsibility of other cachers to constantly maintain your caches. If they are prepared or asked in advance then they may do the maintenance for you. However, you are still responsible.
When another cacher places a needs maintenance note on your cache then you will receive notification of such. From that point forward there will be a "Red Wrench" beside your cache listing for all to see. Now I have seen that and sometimes gone prepared and replaced logs, dried out caches, removed some pretty ugly stuff, and in some instances replaced the cache container.
But, even when this has happened and I have posted a note saying the maintenance has been done or the CO has done it, the "Red Wrench" is still there. Why? Well the CO has to actually post an "Owner Maintenance" log on the cache. Just enabling it or ignoring it will not do the trick.