Use CDataElasticSearch dll in WCF project

I have installed CData Elasticsearch ODBC driver. When I tried to open Elasticsearch connection using CData Elasticsearch ODBC driver in WCF project, I have faced CData.ODBCm.Elasticsearch.dll missing exception. If I placing this dll in my WCF project bin folder, its working fine. Is it needed to placed dll in my bin folder? I think, this is workaround only. Can you please provide me a correct solution?