Silicone containers can go in the dishwasher, but sometimes the stickiness persists. To clean silicone containers, soak in a tub/sink of very hot water (almost boiling) mixed with a hefty drizzle of degreasing dish soap for at least 30 minutes. Then, use a nonabrasive sponge and more degreasing dish soap to scrub the sticky spots off the silicone containers. If the stickiness persists, place the containers on a baking sheet and heat in the oven at 350° for ~ 10 minutes. Then, rinse to wet the surfaces and sprinkle with baking soda. Let dry (this can take several hours) then rinse and scrub with a nonabrasive brush.