The best way is to just be honest about your past. Although your past criminal history might give an employer some pause, you should always add a letter of explanation to your application and mention...
Listen Bob, let's be frank here. I don't have time to worry about any felonies in my past. I'm one bad day and a bender away from ending up under the nearest bridge with a crack hoe and a bottle of...
Hope this website helps
http://www.dsf.health.state.pa.us/health/lib/health/dncf-ciunit/prohibitive_offenses.pdf
or look for misdemeanor, prohibitive offense
If you are given the opportunity to explain the offense, do so in as simple and brief terms as possible and try to minimize the seriousness or the violence (if any was involved) of it, and convey to...