California Proposition 65: This product contains a chemical known to the State of California to cause cancer. California Proposition 65: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm.Silicone caulks and sealants are formulated to resist shrinking and cracking. They help create a waterproof seal, and are resistant to mold and mildew. Here are some important details for Dap Caulk. Color: Biscuit, Size: 10.1 oz., Application: Sealing Around Kitchens and Bathrooms.