Don't rush it and do proper research please.
From a previous post
I just came across a post where a user was asking for tips on how to ensure the success of this method, but unfortunately, I was too late... If this is the method you have chosen, PLEASE RECONSIDER!!! This was the method I chose for my last attempt and I'm so happy that I wasn't able to go through with it. For one, it takes time for the mixture to meet the lethal ppm. Minutes. Minutes of feeling your lungs burning from the inside out while you want to pull your eyes out because of all the stinging. Secondly, almost no one knows about this method because of how dangerous it is meaning if someone finds you without being prepared, they could end up dead themselves. All of the medical professionals I talked to and my parents had no IDEA what this method was and they wouldn't care about all the signs on the car warning them to not open the doors. Lime sulfur stinks. And I mean it REEKS. It smells like rotten eggs that have been sitting out for weeks, it's horrible and the hydrochloric acid is even worse. If the smell isn't enough to turn you off, when you mix them together they react very strongly and will end up exploding everywhere so if you're in an enclosed space and some of that stuff touches your skin, you're going to be screaming in pain no matter how badly you want to die. Please, please, please reconsider. Death is not instant or painless with this method.