I was under the impression that this screw in the top left would release a door/cover to access the contacts, when I unscrewed it and nothing budged, I had no idea how to clean it or what to clean it with.
That screw actually releases the squonk pin (which I unfortunately can not remove right now to show you, sorry). The picture shows that you can just about see/access the contacts from below. As someone suggested above, I removed the pin and then used a small cut out of inkless business card to go in between the button and the contact, pressed the button, then pulled the card out and repeated this until there was no mark being left on the card.
Apologies for making it seem like I had no idea about mech mods or cleaning them, I poorly phrased what I was trying to ask as this device had truly stumped me.
Thanks for the help everyone and I hope this helps someone else with a similar issue.
