it is a question or a statement?
if the 1st - I can tell what I do. in case of dandelion - it is a very noticeable plant, with a very long vertical root. I've obtained a scoop with a very narrow and long blade (like a bayonet), capable to dig in especially such a long vertical roots. And whenever I see a growing dandelion, I remove it along with the root. As you can see, the recipe is very simple :=). You just need consistency... doing it year by year with no relax. the whole problem is that I visit our summer house very rarely, several times in the summer (last year, during covid, was an exception).

but the deal with other weed -- snyt -- is unsolvable this way...