protected function clear_product( $product_id ) {
		if ( ! is_numeric( $product_id ) || 0 >= $product_id ) {
			return;
		}

		// Delete product attachments
		$attachments = get_children( array(
			'post_parent' => $product_id,
			'post_status' => 'any',
			'post_type'   => 'attachment',
		) );

		foreach ( (array) $attachments as $attachment ) {
			wp_delete_attachment( $attachment->ID, true );
		}

		// Delete product
		$product = wc_get_product( $product_id );
		$product->delete();
	}