Hi Evangeline Thiruchelvam,
Thank you for the review. Usability or functionality is something that our fulfillment partner or Distacart has no control over it. We recommend you check the information in the product description for the exact instructions for the product's usage. Please reach out at happy@distacart.com or call us at +18552534782 for more clarification and we'll be happy to assist you further.
Thank you,
Customer Happiness Team!