Wait, you hit $500 in just 7 months from round-ups alone? That seems like a lot for spare change. I use round-ups too and after 6 months I only had about $85, and that's with me spending pretty often. Are you rounding up to the next dollar or doing some kind of multiplier like $2 or $5 per purchase? Because if it's just single round-ups, you'd have to make hundreds of transactions a month to get that kind of money. I'm genuinely trying to figure out the math here because my numbers are nowhere close to yours.

Regular detergent really isn't the bag killer people make it out to be. The DWR on most bags wears off from use and dirt long before any soap touches it, so blaming Tide pods is just easy scapegoating. Half the folks pushing tech wash are sponsored or repeating what they read somewhere, and a $15 bottle for something you use twice a year is a hard sell. My old 15 degree bag got washed with whatever was in the laundry room for six years and still kept me warm in the 30s. If water stops beading, you probably need to re-proof it anyway, not switch detergents.