^ "Good quality" meaning it erases well. For example, some erasers I buy to erase my pencil work dont work well... it just ends up spreading my writing all over the paper leaving a gray mess all over. This is NOT the kind of eraser you want to use on your bag or anything else for that matter. You want the kind that erases the pencil work so your paper is like brand new. I use the brand "staedtler mars plastic" it is white colored and comes in a bar shape. It works really well, but the best kind you could use is of that quality but in the pencil like clicker form so you just click and more of the eraser comes out, this way it makes it easier for you to target the dirty parts of the piping (its hard to explain but I hope you know waht im talking about). Either will actually work fine.
By "clean" I mean your eraser must not have any dirt on it already otherwise it will just spread that dirt onto your bag. Hope this all helps! =)
OMG you literally meant eraser!! Thank you so much!! I thought you were referring to the Mr. Clean Magic Eraser Sponges that i've been hearing about. I will definitely try your suggestion!!
