Expiring content on a set date

Seems like this should be so simple, but after reading the forum/documentation for a couple of hours haven't found an answer.

Is it possible to expire entries on a set date so they no longer show on the site. I have a date field titled "expire" that I'd like to set so that the entry stops displaying after that date. I currently have this is my page:

perch_content_custom('Jobs', array(
    'template' => 'job_listing.html', //use the template found in the perch folder
    'sort'=>'start',
    'sort-order'=>'DESC',
//     'count'=>1,
//     'filter'=>'expire'
//     'lte'='expire'   
    'filter'=>array(
        array(
            'filter' => 'start',
            'match' => 'gte',
            'value' => date('Y-m-d 00:00:00')
        ),
        array(
            'filter' => 'expire',
            'match' => 'lte',
            'value' => date('Y-m-d 23:59:59')
        ),
    ),
));

and this in my template:

<perch:before><ul class="plain"></perch:before>
<li><perch:content id="start" type="date" format="%D" /><a href="detail.php?s=<perch:content id="slug" type="slug" />"><perch:content id="title" type="text" />, <perch:content id="landtrust" type="text" /></a></li>
<perch:after></ul></perch:after>

Not even sure where to start to get this working.

Thanks, Tim