Our new article presenting an innovative method of Facebook-ad sampling that we employed to recruit Polish essential workers is now out. The piece reviews our survey performance over a 4-week period in spring 2021 and how our ad campaign’s reach, impressions and survey clicks (conversions) changed over time. It also analyses whether we recruited different respondents at different stages of sampling in terms of response quality: attentiveness and carelessness (e.g. nonresponse). The article is fully available online HERE and its replication materials are published on the Open Science Framework’s website HERE.