Article: Fill the largest pot you have with water and bring it to a boil. While it’s still hot, pour the water over the entire area you dug up. To protect yourself and any other plants closeby, pour slowly and try not to splash the hot water. You may need to repeat the boiling water technique several times to kill all of the roots. After you pull or spray the plants, spread a 1 foot (0.30 m) deep layer of compost, grass clippings, straw, or wood chips. Leave the sheet mulch on for a full season so it can function as a barrier, preventing any new poison ivy plants, while simultaneously rejuvenating the soil.  To add an even stronger barrier, place cardboard underneath the sheet mulch or a layer of  plywood over top of the sheet mulch. For example, you could cover the affected area with several layers of cardboard, then top it with about 1 foot (0.30 m) of mulch. Check around the edges of the mulched area for any new growth. If you spot any offshoots, spray or dig them up immediately. Add more sheet mulch to the area to keep the plants from coming back. You'll know that the area is clear of poison ivy when you stop finding regrowth!
What is a summary of what this article is about?
Pour boiling water over the dug-up area to kill any hidden roots. Smother any new growth with a layer of sheet mulch. Monitor the area during the next few weeks for any new offshoots.