Hide Added to Cart message in Woocommerce

Update for Woocommerce 3+

The hook wc_add_to_cart_message is deprecated and replaced by wc_add_to_cart_message_html. You can use the following (compact effective way):

add_filter( 'wc_add_to_cart_message_html', '__return_false' );

Or the normal way:

add_filter( 'wc_add_to_cart_message_html', 'empty_wc_add_to_cart_message');function empty_wc_add_to_cart_message( $message, $products ) {     return ''; }; 

Before Woocommerce 3, use this:

Removing only the message (pasting it to your function.php file inside your active child theme or theme). This function will return an empty message:

add_filter( 'wc_add_to_cart_message', 'empty_wc_add_to_cart_message', 10, 2 );function empty_wc_add_to_cart_message( $message, $product_id ) {     return ''; }; 

Code goes in function.php file of your active child theme (or active theme).

Note: wc_add_to_cart_message replace deprecated hook woocommerce_add_to_cart_message.

(UPDATED)

CSS: Removing top message box on checkout page (add this css rule to the style.css file located inside your active child theme or theme):

.woocommerce-checkout .woocommerce .woocommerce-message {    display:none !important;}

You have to use this code in order to hide this

add_filter( 'wc_add_to_cart_message_html', '__return_false' );

You can find more information here hide added to your cart