After removing the seeds from a pumpkin, you can end up with a slimy orange mess. To get the seeds clean and ready for roasting, we recommend separating the pumpkin seeds from the rest of the orange flesh. You will still have some remnants of pumpkin left on the seeds, which is OK. Place the seeds in a colander and rinse with cool water until the seeds are clean. The slimy feeling may still be present, but that will go away once you cook the pumpkin seeds. Toss the seeds to dry, and they are ready to go.