Gas and water usage in my home has got out of control and I think will lead to a divorce court and my kids being sold! Seriously though, I need to kerb their shower times as its ridiculous. Is there some sort of timed shower control/head, whatever, that I can have installed. I was thinking like the one in the gym where you have to push a button every 15 seconds but not sure that would work with my combi boiler. Any advice PLEASE. Thank you in advance.