Wordpress conditiona tags

I have created some custom post taxonomies and I have been able to call them but what I have been struggling with is how do I make them conditional so when nothing is entered it removes the taxonomy.

Here is what i currently have:

<div id="lefty" class="spec2_lable">Products</div>
<div id="righty" class="spec2_result"><?php

$terms_as_text = get_the_term_list( $post->ID, 'pro', '', ', ', '' ) ;
echo strip_tags($terms_as_text);

?></div>

I would like to make this only show is something is entered into the taxonomy.