Thanks. So far, I don’t think I have any ones that bad off. All of these were either in the tidal water of a slough or dumped on ground that floods after the dike was built. I’m trying to figure out if the dike was built before or after these bottles were here.Wow! I think you did an incredible job. When you get an older site, you will find that they do not just rinse on. You can scrub all day and it won't help. It is called sickness. It is etched into the glass. The only way to remove the offensive occurrence is to tumble. Here is two very sick blobs from Philly.