Method NEW THEORETICAL METHOD with helium. Cheap, PAINLESS.

[Marco77]

It's the preferred method of Boudewijn Chabot in his book 'Uitweg' (Dignified Dying) and it's actually quite simple and effective. He advised 2 balloon tanks without regulator. The regulator, for me, is the most difficult part in this method.

How is it risky? It's not like the house is going to explode when helium is leaking. As for unreliable: you can do a test run.

You could suffer very serious brain damage. That's where its high risk lies.