This is what we use every day, and recommend it to you:
Looking for the best poop bag out there? As a team who’ve picked up our share of poop using more than our share of bags, we have a solid recommendation. We all use Earth Rated Dog Pop Bags.
We like their just-right thickness, ease to open, and thoughtful dimension that can hold “multiple movements” and still be tied shut without struggle. They are also designed with landfill-life in mind and shouldn’t dwell for eons depositing plastic into the earth.
Team Buddy has used dozens of other bags and all agree this is a great way to go.