# DR util component

### Using with LWR

The `drb2b_drUtil_LWR` is a component with no UI. Use this component to clean up old cart data when the Checkout page reloads. It also refreshes the Digital River components whenever tax information is calculated.

### Using with Aura

The `drb2b_drUtil` is a component with no UI. Use this component to reload the `drb2b_addressDetails`, `drb2b_checkoutSummary`, and `drb2b_drCompliance` components and get the latest values. Loading this component triggers an event (`CALCULATE_TAX`) to reload the `drb2b_addressDetails`, `drb2b_checkoutSummary`, and `drb2b_drCompliance` components.