Many people have been led to Christ in this way. There is no certain time or amount of time required - just whenever the opportunity arises. Tracts can be left anywhere or shared with almost anyone. There are tracts for every occasion, for every need, and for every type of person. Tracts can be distributed by anyone, regardless of age, sex, race, or education.
Tracts eliminate the problem of forgetfulness or uncertainty of what to say.
The message, since it is printed, can be taken home, re-read and studied. Tracts can be passed along, and can therefore be used over and over again. Tracts can be mass distributed easily. Tracts are inexpensive and can be handed out liberally. In Tract Evangelism 1.