How do I kill poison ivy?

Cut at root and spray the root.

needs done a certain way to be rid off it....Use Round-Up--cut if off,wearing mask & gloves and long sleeved pants shirts remove tops put in garbage bags( thoroughly wash clothing shoes tools anything that you have used to remove the tops;get 2 gallon pump sprayer(not a back pack don't risk leaking solution on your back) buy concentrate Round-Up add food coloring to it(so you can see where you are spraying it) as soon as you see new leaves growing on stems spray them heavily with the Round-Up. It is absorbed into leaves them stems then kills root systems. Round-Up works best when plant is in vigorous growth after being cut off & new leaves are emerging.Keep checking for new growth and spray thru out growing season.Depending how big the area is it may take a few weeks to get it all. Put spray nozzle down onto leaves when spraying & do not spray in wind or breezy conditions;use gloves;do not walk or get in wet solution. Follow the safety instructions on container they are & have always been on the container for a reason.

My dad used round up. It took several applications but it is now dead. Just have to remove the shriveled up remains (sounds so gross).

Poison ivy sprouts up from a long vine that grows under the ground and the leaves sprout up from this vine. It will keep coming back until you kill what is called the "parent vine". Spraying once with a product like Round Up will kill what you can see but it's probably not enough--you have to keep watching for new leaves and respraying over the course of the summer and into fall. The following year you will have to pay attention to the areas you sprayed as it is still possible that it will come back. The under ground vines are very very long. If you know what they look like you can wear gloves and pull them out. Round Up specifically for poison ivy is what I have found works the best. It's not the regular Round Up--it's a separate stronger product. If you keep working at it you should be able to get it to stop growing in areas you don't want it. https://www.gardeningknowhow.com/plant-problems/weeds/poison-ivy-control.htm

No you can't get rid of it permanently. That's not how nature works. Spreads by wind, wildlife and people. All we can do is control it. I just did this with my girlfriend. We suit up, dig it out, Mark the bags for the trash service and drown the area in agricultural strength vinegar. Then hop in the shower and then wash our work clothes.

3 cups white vinegar

1/2 cup table salt

1 tablespoon liquid detergent or soap (I use Dawn) for stick-to-itiveness.

Directions

1. Mix vinegar and salt until the salt is completely dissolved. Stir in liquid dish soap, and pour into a spray bottle.
2. Spray onto the green growing leaves of the plants.
3. Wait a week, then repeat on any survivors. Best time to apply: during a dry spell.

Repeat as necessary.