Most people believe that if you take off the top, the weed will die. However you must get the roots out to kill a weed. So, why are weeds difficult? You have to work to kill 'em. Or you could use a chemical weed killer.
the farmer eradicated his weeds.
Young weeds are easier to eradicate as they are still shallow rooted. They have yet to form deep, extensive adult rooting.
It is a long handled implement with a thin flat blade, used to break up the surface of the ground and eradicate weeds
Parasite worms are difficult to eradicate.
to eradicate crop residuals from previous plantings, such as corn stalks or wheat stubble; to destroy weeds; and to modify the structure of the soil to accommodate planting
I wouldn't recommend it unless you don't mind making your soil very alkaline-y.
Spam is difficult to eradicate because it is not always easy to determine what data is wanted and what data is not. Spam can look like a perfectly legal advertisement. There are many types of spam filters, but of course not all spam can be caught. It can pass through, the same way you get spam in your regular mailbox.
The proverb "weeds are difficult to kill" means that problems or issues tend to persist and are challenging to overcome. It carries the message that addressing an underlying issue thoroughly is important, as superficial attempts may not be effective in the long run.
Mix 1.5 ounces (3 tablespoons) of herbicide to 1 gallon of water to renovate an entire lawn, or to eradicate weeds and grasses that are easy to kill. For tougher jobs, such as vines or perennials weeds, mix 2.5 ounces (5 tablespoons) to 1 gallon of water.
Invasive weeds are kept at bay by city crews who are paid to uproot them.
I hope to eradicate the ship's vermin without threat to the crew. You may commence to eradicate... now.
Downfall in what? A bigger or more organised gang beat them. Which is not too difficult. Weeds do it.