[2020-3030]

The Retraction Watch website http://retractionwatch.com/ is one good method of highlighting retracted work. For researchers in any given field, keeping current on literature is hard work given the pace of publication but does include seeing retractions.

So, the answer to your question depends on which researchers we mean. Experts in a field have the best chance of noticing relevant retractions in their own field. If you are a researcher in one field who has interests in many other fields, it is probably much less likely that you will be able to follow the retractions in those peripheral fields. That is why Retraction Watch and other mechanisms of highlighting such errors is useful.