Without saying a lot. The ticks are thick in Pennsylvaina. I hiked the Raccoon State Park (Western PA) this past weekend, my pants had multiple ticks on them, and I found one burrowing in to my left arm during a 7 hour hike.... luckily for me it was not fully embedded.
Make sure you are dilligent and check yourself and your animals when you are hiking! Pennsylvania is known for having a strong tick presence and this year is the worst I have seen yet.