Vinegar on them will kill them. If you don’t want to damage surrounding grass use a dropper or fine pinpoint spray.
This may help: https://homeguides.sfgate.com/homemade-natural-dandelion-weed-killer-44593.html
Mix 1 tablespoon of liquid dish soap, 1/4 cup of lemon juice and 1 quart of vinegar. Pour this into a spray bottle and spray enough to thoroughly coat all parts of the dandelion. If the dandelion hasn't completely withered within three hours, spray the plant again.
Here's what I use:
Just a slightly different take on things: https://www.thespruce.com/no-respect-for-clover-and-dandelion-weeds-2153155
They suggest controlling dandelions by eating them. I just made a nice dandelion wine with a bunch from my yard. :-)
pour straight vinegar around base of plant soaking down into roots do in full hot sun no rain for next 3 days killing roots not leaves are essential as well as getting rid of plants before they get and sprout seeds heads or you have even bigger mess next season
this works for me https://www.pinterest.com/pin/125537908349912344/
Hi Harold, so happy to see you are using natural products in your lawn. Hope this helps you. How to Use Vinegar as a Natural Weed Killer - The Spruce
www.thespruce.com › Landscaping › Landscaping Tips
Many gardeners use vinegar as a natural weed killer for clover, dandelions, and other plants. Learn how to use vinegar safely to get the job done.
I use one cup of vinegar, one cup of salt to two gallons water in a garden sprayer. Saturate the weeds till dripping. Do not use on lawn or in garden. Will kill everything. Boiling water on weeds in lawn and garden.
Hi Harold - The struggle is real, isn't it?!? This is the most effective all-natural weed killer DIY that we use. It's even been featured on Hometalk and pinned thousands of times! Hope this helps! Hugs, Holly
PS - We have a FREE eBook with recipes for all of my homemade and all-natural cleaners. You can download it here --> https://pinkfortitude.com/thank#GreenClean
Here is an all natural recipe that kills all kinds of weeds