How to remove categories from category dropdown if no products within the category

Question

I want to be able to hide categories in a categories drop down menu (wordpress + woocommerce) if the number of products within the category is 0. Does somebody know how to do this? I tried this below:

wp_dropdown_categories('hide_empty=0');

and

wp_dropdown_categories('excludes=0');

Answer 1

wp_dropdown_categories( array|string $args = '' )

wp_dropdown_categories('hide_if_empty=true');