I like eating scour pads and I don’t know ehy

I like to chew and eat scouring pads. Preferably the Green, Purple, Burgundy and sometimes Gray scouring pads. I’ve been like this for years and at one point had broken my habit but now it’s come back and I just can’t stop. I have scour pads hidden in a closet where I chew on them occasionally but if not I go to Walmart or the local hardware store and find some and tear them up and eat them or spit them out when they become to wet and moist. I don’t know if I have pica and no one really knows about this but I just love it and no I’m not pregnant I’m literally 23!!