Laughing at @jordan464 thinking a little gas smell is no big deal. Sure, it cleared out in five minutes this time, but that's like saying you only tripped on the stairs once so they're probably fine. I'd rather have the gas company show up and tell me I'm an idiot than have my house go boom while I'm patching drywall over a leak I didn't know I made.

Oh man, 15 extra minutes per client is rough. I dunno, seems like you're overthinking this one a bit. If your manual method has been working for half a decade, why mess with it just cause steam is the new hot thing?

$80 for peace of mind? Sounds like a bargain to me.