- Scratch graffiti – is a form of graffiti using an object such as a screwdriver or stanley knife to etch a tag into glass. It cannot be cleaned off using traditional methods and is intended to be permanent.
- The tag serves as a calling card and an invitation to other graffiti artists to better it. Once you have one tag on your glass within a week you may have 3 or 4 more detracting the look of your property
- Acid etching – graffiti on glass using acid or glass etching products purchased from craft stores. These are then transferred to bingo dabbers or similar and used in the same manner as a pen. Once applied it does not show at first but burns into the glass over time, the longer it stays on the glass the deeper it corrodes.