We are trying to eliminate some items from our search results. When we go into the product record and mark it as deleted, it sets a boolean "Logically Deleted" on the product record but doesn't appear to actually delete or remove the record.

I'm trying to understand the intention here. Is there some sort of cleanup process that deletes all the product records marked as logically deleted at some point (similar to emptying the Recycle Bin in DNN itself) or is it intended that the record remain in the database and it is hidden through code actions?

If the second, there might be a bug that the search engine still "sees" the record even though it is logically deleted. 

If it is the first, what is the mechanism for removing the logically deleted records, how often does it run and is there a way to trigger it manually?

Thank you,
George