I certainly do.
In the past I have prepared 'tracts' shown them to friends and aquaintences who showed an interest in the WTBTS.
Shown them the things they will not be told until they are deaper in, I know for a fact that two of the people I have spoken to have cancelled their 'Bible Studies' and several have dropped their interest in the society.
I find this method easier than trying to 'witness the witnesses out'.