How to Clean Dr. Brown's Milestones Straw to 360° Cup Set

Quick answer

Disassemble all parts, rinse immediately after use, hand wash with warm soapy water using a bottle brush, and air dry completely before reassembly.

Step-by-step cleaning guide

1. Disassemble all parts immediately after use: Separate the cup body, the lid you used (straw lid or Cheers360 lid), the silicone straw (if using straw lid), and the Cheers360 spoutless seal. Rinse each part under cool running water to remove leftover milk, juice, or water. Do not let the set sit dirty, as dried residue is harder to remove and increases mold risk. Rinsing right away prevents residue from drying inside the straw or seal.
2. Hand wash with warm soapy water and a bottle brush: Fill a basin with warm water and a mild dish soap. Use a small bottle brush to scrub the inside of the cup and the straw lid's silicone straw. For the Cheers360 lid, gently clean the spoutless seal with a soft brush or sponge, paying attention to the edge where the seal meets the lid. Rinse all parts thoroughly under running water to remove all soap residue. A dedicated straw brush reaches the narrow straw interior where mold often starts.
3. Air dry completely before reassembly: Place all parts on a clean drying rack or towel, with the straw and lid pieces facing down to allow water to drain. Do not reassemble until every part is fully dry—this can take several hours. Storing the cup while damp encourages mold growth inside the straw or under the spoutless seal. If you need the cup sooner, pat parts dry with a clean paper towel before reassembling.

Product details

• Dr. Brown's® Milestones™ Straw to 360° Cup Set: The all-in-one set helps baby learn new sipping skills with two interchangeable lids: a lid featuring a super soft silicone straw that is spill-proof, and a leak-free Cheers360 spoutless lid. Because both lids have unique parts (straw, spoutless seal), you need to clean each one differently to maintain their spill-proof and leak-free performance.