... to the homepage.

Basically i need to redirect this page:
www.mysite.co.uk/products.php?product_category_id=13
or
www.mysite.co.uk/products.php?product_category_id=15

to:

www.mysite.co.uk/

This is because I want to redirect anything leading to this page (products.php) to the home page.

Ive used a few techniquer but none have worked:
Code:
RedirectMatch 301 /products.php/?$ http://mysite.co.uk/
Code:
RewriteRule ^index.php/ http://nigelmilne.co.uk/products.php? [NC,L,R=302]
Now this one:
Code:
RewriteCond %{QUERY_STRING} ^product_category_id=13$ [NC]  
RewriteRule ^products\.php$ http://www.nigelmilne.co.uk [NC,R=301,L,NS]
It works, but when it gets redirected to the home page, its keeping the query string, and as you can see also i have to hardcode the '13' in. I don't wanna have to do this as the pages are dynamically generated.

Any help would be fantastic.

Regards,
Joe.