ummm I dont really get the question lol.....here a filter is a piece of rolled up cardboard that you put i the end of the joint kinda like a filter but it just keeps the weed in place and allows you to take bigger tokes. and what do you mean by roaches in, you mean like 3rd generation joints??
3rdEyeVision Reviewed by 3rdEyeVision on . how do you roll? filter in or out? Rating: 5