Our 1/2" Diamond Top Dog Kennel Mat Kits interlock very tightly, preventing urine from getting between and under the tiles. We do offer a number of rubber roll products, but depending on the size of the are, you may still end up with seams. If you are concerned about the seam, we would recommend adding some seam sealer glue to the seam to ensure there is no separation of the mat. These mats do have an odor to them that can be strong. You can mitigate some of the smell by mopping the floor with a mild soap and water solution, but there will still be a rubber smell to the mats.