When you delete a product in WooCommerce, the associated images don't automatically get removed. This is done to prevent data loss. However, you can configure a custom action that deletes the product images upon deletion. Follow this step-by-step guide to set it up on your WooCommerce store.  

Step 1: Create a Function to Delete Product Images

First, create a custom function that deletes the images linked to a product. This function will remove both the featured image and gallery images.

function remove_product_images($post_id) {
    $product = wc_get_product($post_id);
    if ($product) {
        $gallery_ids = $product->get_gallery_image_ids();
        $featured_image_id = $product->get_image_id();

        // Delete featured image
        if ($featured_image_id) {
            wp_delete_attachment($featured_image_id, true);
        }

        // Delete gallery images
        foreach ($gallery_ids as $image_id) {
            wp_delete_attachment($image_id, true);
        }
    }
}

Step 2: Link the Function to Product Deletion

Next, use the before_delete_post hook to trigger the function when a product is deleted.

add_action('before_delete_post', 'remove_product_images');

Step 3: Add the Code to the functions.php File

Add the code to your theme's functions.php file. If you're using a child theme, add it there to preserve the code even during theme updates.  

Step 4: Test the Product Deletion

Test the functionality after adding the code. When you delete a product from the WooCommerce admin, its images should be deleted from the server as well.  

Important Notes:

• Always backup your site before making changes, as deleting product images is permanent.
• Test this functionality on a staging site before implementing it on your live site.

External Resources:

• Managing Products in WooCommerce
• wp_delete_attachment Function
• before_delete_post Hook