Questions about using sticky tack for hit indicators on vehicle models

I want to make a space ship combat game that uses sticky tack to mark where a ship has been hit at, to allow for debuffs to be applied. However, I understand that sticky tack will most likely get dirty quickly and must be replaced.

- would this still be a viable gameplay gimmick? and has this been done before?

- would the occasional expense of buying new tack turn away players? (personal opinion, I'm not looking for a business class lol. ill figure that out later if i need to)

- is this a health risk?

- are there less messy alternatives that wont harm the look of the models too much?