put it in the back of my work van where i would see it and later store it elsewhere. when i cleaned out the van it was nowhere. i always clean out the van completely down to nothing. hand broom and vacuum final. there is a piece of carpet i cover the floor with to make things look better. it is shook out and vacuumed. no special drill bit. sometimes i fold back the carpet in the back when i'm hauling debris to avoid dirt on the carpet. i did this several times and the cleaning procedure since the special bit disappeared. today i was hauling trash and folded back 