Widget class name clash

Hi,
I have created widgets for my custom theme as I have needed them and now they are clashing because when they are registering some of them are using the same option name in the db, is there a file or cache to clear to get the correct class name.
all the files are different in every way
eg

class home_CTA extends WP_Widget
{
    function __construct()
    {
        $widget_ops = array(
            'classname' => 'home_CTA',

and

class productsSidebar extends WP_Widget
{
    function __construct()
    {
        $widget_ops = array('classname' => 'productsSidebar', 'description' => esc_html__("Sidebar Product Page Navigation", 'theme'));

cheers
Kev