Block Rule: Robots.txt - Will Sub Dir also get blocked?

[jaffstar]

A CMS system we use has an enquiry form that when clicked grays out the page...

When scanning the site, it reports it as a 404, and there are 100's..

The url is as follows www.domain.com/product/enquiry_form/product-abc

There are URL's that come after /product/ that I dont want to block. Would I just need to block /enquiry_form/ and not include product?

[Dijkgraaf]

The first product in the URL a literal or a variable?

Disallow: /product/enquiry_form/
will stop well behaved bots from requesting.
/product/enquiry_form/product-abc
/product/enquiry_form/product-def
etc.

It won't block
/product/somethingother