Best Weedkiller for Daisies?

That's it. Any suggestions, please?

 

Hi is this in lawns, borders or hard areas like gravel?

 

Hello, good morning. In my lawn (such as it is), hundreds and thousands of them!

 

The good news is they are easy to deal with. Any product containing L 2,4-D, dicamba, MCPA and mecoprop-P will be able to treat them. The common MCPA and mecoprop are found in many domestic lawn herbicides as well as weed and feeds.
There are several ways to go. If you have a large number you may find you need to encourage grass growth to fill in the areas or even reseed depending on the density level.
You have granular weed and feeds that will deal with them or you go with a liquid lawn weed killer where you spray the area.
Weedol do a lawn weed killer but I don’t know it’s ingredients but would imagine it’s the common found ones so should be ok. Unfortunately I don’t use domestic products but daisys are really easy to treat.