Got a yard full of itchy-scratchy poison ivy that's driving you and your family crazy? Today, you'll learn how to make a killer spray that'll knock poison ivy dead. From deep within the Carey Brothers' vault of somewhat-deadly remedies (toxic only to pesky foliage), we bring the solution. To whip up a batch of our special homemade poison-ivy-killer spray, which is very safe and highly effective, mix 1 cup of table salt in 1 gallon of cheap white vinegar and heat it until the salt fully dissolves. Once it cools, add in 8 drops of liquid dish detergent and then spray or pour it on; soon the pesky plants will wilt away. However, do be careful, as it'll kill any other plants it comes in contact with, too. Also if you have a well, use the solution sparingly, or find another alternative. Too much of this spray can leach into your water supply. And that's the On The House Tip for today.