for screen printing we use a spot gun..i am not sure about DTG but the spot gun is used after the ink has gone through the oven/dryer. feel free to message me ...
For DTG it's better to try before the ink is cured. Once DTG ink is cured, it's practically impossible to remove the all ink with a spot cleaning gun. If you can cure the printed area and leave the smudged area not pressed, then you should be able to get it out without worrying about messing up your other printed area.for screen printing we use a spot gun..i am not sure about DTG but the spot gun is used after the ink has gone through the oven/dryer. feel free to message me ...