AmazonBasics Dog Waste Bags, Standard, 900-Count — $12.73 with 5% S&S ($11.39 with 15% S&S) @ Amazon

I just went through my second 900-count box the other day. These are pretty good poop bags. I can’t say I’ve tried all that many different bags though.
https://www.amazon.com/dp/B00NABTGY2