A natural solution for colic, constipation, and other gas-related problems, the Windi works instantly and does not require ingestion of any drops or medication. The Windi is a single-use tube that helps babies get rid of excess gas. Designed to be safe and effective, the Windi cannot harm your baby if used as instructed. Most pediatric professionals are familiar with the method of using a rectal thermometer to relieve gas, colic, and constipation.