I think they were kind of corny, but certainly reached a certain audience.
I particularly remember one of his tracts which argued that the TV show Bewitched was satanic because it made witchcraft look attractive and harmless.
Seemed silly. Then I realized that virtually everyone associated with that show died before their time of something awful.
The most beautiful one was the one with the abused little boy who is beaten to death by his father, and he is brought to Heaven in the arms of an angel. Always brought tears to my eyes!