We have trial boards where we have tested the erase-ability of our onits that go back months. Watch out for updates on our website as we test the erase-ability every month.
onits are made with a special surface designed to allow ink to be erased cleanly after months. Just use a dry eraser or piece of soft kitchen roll and the ink will granulate and fall off the onits.
As a dry wipe surface the key is to allow the ink to dry completely before erasing it. If you have wiped the onits we suggest you use an isopropyl alcohol wipe to remove the smudge and leave to dry before using the onits again.
Remove the onits from the board and individually wipe clean with an alcohol based wipe
Allow the ink to dry. Then wipe with a dry eraser or a piece of kitchen roll