i had the same thing happen for two weeks. all of my wife's wine bottles !! I read somewhere it could only be glass.. so the next time I removed all the little tin wrappers at the top of the bottles and they picked it up this week. also, I wrote "glass" in big letters on my glass container. hope that helps.

We have discussed this with our Recycling Contractor and will continue to keep our eyes on this for a couple of weeks, to see if this becomes a problem.