Amazon has the 120-Count Boxiecat Scoop & Tie Cat Litter Clump & Poop Bags (Unscented) for $9.99 - $3 off (automatically applied at final checkout; Subscribe & Save required) = $6.99 with free shipping on $25+ or with Prime. Sells for $9.99 + elsewhere.

These handle bags are large enough to fit to accommodate any cat litter scoop.