Ok, this person in my household has been a problem alcoholic for sometime. We all know it to be true, and we have to do everything in our power to stop it (not going to go into WHY its such a huge problem). The problem is, this person will leave for other errands and come back drunk. This person doesn't go to bars or anything, they simply buy vodka bottles from the liquor store and drinks them either in the car while they are out (and yes, drives while intoxicated), or stash them somewhere in the house when they get home and drink them all day. Its very rare that we find a stash, and when we do a new stash is created instantly. We cannot cut this person off from funds to buy this vodka, as they have multiple ways they have developed over the years of hiding the fact that they are buying alcohol. Every time we try and confront this person on it they will outright deny it ever happens. Like this person can be completely smashed, staggering around barely able to walk, and will 100% of the time say they haven't had a single drop, including getting insanely mad and screaming it. I've literally went into this person's room and grabbed an open bottle of vodka they had CLEARLY been drinking out of (they were trying to hide it when I was in there and I saw it) and been told "I wasn't drinking that at all". We can only get said person to admit it in private conversation a day or so after their latest sloshed streak.
I have considered simply calling in to the police to get this person a DUI, but again, due to issues I cannot say, that will cause HUGE problems, much more than simply losing a license and a hefty fine. If it wasn't for one big issue it would cause I would have done it years ago. We want to focus on being able to catch this person in the act so that when they deny it, we can present evidence. But we don't know how to do this because this person drives many places during every day and we don't have the time to send an escort with them everywhere. Maybe there could be a small mini-camera we could get installed or something in this person's car in order to get video footage of this person drinking or entering liquor stores? (due to this problem we do not allow ANY alcohol in the house at all so there would be no reason to go to a liquor store other than to get drunk).
Anyone have any other ideas? Can't get this person any help because they refuse it, and we can't make it public we have to deal with it ourselves.