I use the imsevimse liners for...excriment...but I also have had some success using pieces of sewn fleece to absorb extra urine. I will post a picture of how I sew it someday. Basically I get fleece remnants from the fabric store or left overs from projects I have here, sew them into basic 4"x8" pieces (double thick) and stick them in the diaper! Fleece is so soft and it absorbs a lot of moisture. These have been working great while my boys are sleeping and not getting changed as often-also great for road trips!