I used to remove a little Poision Oak on fire trails and fire breaks. It is tricky but can be done safely. One must be very careful and it may take a couple seasons. It's best to do it when there's no leaves. Use gloves and throw away each time. Cut using loppers and stack branches in a neat pile. Be EXTREMELY cautious of the juice that forms after cutting the end. If it presses into your clothes you'll have a burn mark like someone used a cigar! Cut once. Then back away. That liquid can splash off the end. After you're done you can go straight to the washing machine (dont touch anything just in case.) Have someone help you open doors and operate the wash machine. Use DAWN 3x concentrate dish soap along with the detergent. Make sure you took your special poision oak boots off and keep them from touching anything. Do not bring them into the house. Now after putting your cloths into the washing machine, take a shower with DAWN as well. Be sure to wash hands first then RINSE. Then arms and rinse. Now, wash from head to toe with DAWN 3 times. You wont get poision oak this way.
How I used to clear poision oak was with a large weed wacker with a 3 point blade. I wore a huskvarna helmet with the regular screen and safety glasses. I wore leather gauntlet gloves and long slieve canvas shirts and jeans. The blade wouldn't make the juice splash but walking on it it would be on the bottom of my shoes. In 2 years doing this I only got one little dot. I used cortezone cream after washing with dawn the same day and it went away in 3 days.
So, I suppose by now you're thinking maybe this is not such an easy thing? It's kinda spooky. I would really get creeped out at first. My father was imune from doing it for years. But could keep it contained and my mom rarely got it. After a while I just went for it and mowed it down and used DAWN as per instructions above and never got it. I know of a patch that is really thick. The home owners worked every year to cut it back. They got it done by cutting and letting it dry for a year then picking it up. DO NOT BURN IT. You will get it in your eyes and lungs. Not good. I would be careful and take the time to cut only as far as your loppers can reach. Let the branches and stumps dry. Spray the cuts with poision oak killer. It can be done!