There is little doubt about how to pre-treat t-shirts as the cornerstone of the DTG printing process. As we move into the digital age, a lot of development has paved in with inks. The printing industry has adopted a wide range of fabric printability integrated with cutting-edge pre-treatment solutions. Without pre-treatment, your designs won’t turn out the way you want them. How to pre-treat T-shirts for DTG printing? To get optimum results, spray the T-shirts with a pre-treatment liquid.