I hated these bags!  Yeah I know, I stand alone in this.  But I do hate them!  Wen I clean up dog poop, I also clean up any remnants of poop on the grass, sometimes pulling bits of grass out on purpose so as to leave nothing behind (as best as I can).  These bags make that impossible.  There is no give in these bags for detailed work such as described.  These bags are like doing surgery with hockey goalie gloves on.  So I am back to standard bags which work great (I prefer Bags on Board - come off roll clean, never fail/tear/etc., can pick up more than one pile (we've smaller dogs), etc....