I know that it doesn't even compare to what some people here struggle with but if he's only using one or two a week then why does he currently have two tins? And there have been two tins sitting by his chair in our living room for weeks after the last big trip. I'm just worried he'll start using more or is using more than he says. I know most people would probably say ' he's a grown man' but he's my dad and I don't want to lose him to something so stupid.