Is joint sand suitable against weeds?

Good evening, after extensive paving and stone slab laying work, we would like to fill the remaining small joints with suitable material so that as little weed as possible can grow. We found on the internet that there is so-called "No Grow" joint filler sand, which is supposed to prevent weed growth. Therefore the question: Is something like this recommended? Has anyone here possibly already had experience with it? Or are there better solution suggestions?

I join the question. What width do your joints have? We have 3mm for the panels and the manufacturer datasheets usually specify 5mm as the minimum width. Currently, I have fine gravel inside but I am open to a bonded joint.

Self-adhesive joint sand helps, it is available from many manufacturers, I see the direct comparison right outside the door..

I am allowed to scrape, the neighbor has the said joint sand with binder.
I will definitely do it too in due time.

I just applied the No Grow Sand on our entrance path.
20-year-old pavement, the joints were no longer well filled and thus it was a weed nightmare.

So the joint sand was great to work with and the visual result is convincing. In places, individual shoots still come through, BUT I probably didn’t scrape out the joints deep enough in some areas. It should probably be 2-3 cm so the sand can really work.

I will keep an eye on it and first carefully pull out new weeds regularly. Otherwise, I will clean the joints again and try it again.
But I am sure the result would be worse without this joint sand.

After the first rain, it settles a bit, then rework again.
The stuff swells a little when it comes into contact with water, so it should definitely be applied dry so it can nicely fall deep into the joints.

Therefore, when buying at the hardware store, make sure it was stored indoors.
That’s how I bought it at OBI - all good.
Later, I bought a sack for my mother at toom (stored outside) and it was at least 50% moist and therefore much harder to work with.
However, the packaging did not have any obvious damage.

I estimate that the stuff is simply highly hygroscopic due to its fine grain size, similar to salt, for example.

Another advantage:
Works quite well against ants. At the front area of the path, the ants had spread extensively in the joints. I also filled in their “territory.” After one day, they had pushed the stuff down again somewhat.
Worked it over again immediately and about two times like that. After that, the ants probably gave up because it was too much hassle ;)

I guess the stone dust is a bit too heavy for the ants, thus too exhausting to continuously fight against and they ultimately look for another spot.

PS:
Best swept in with a soft broom, so preferably don’t use the typical street broom.

I would always go for crushed stone or stone dust. In combination with water, it becomes rock solid, nothing will grow anymore.

I would always go for crushed sand or stone meal. When combined with water, it becomes rock-hard, nothing grows anymore.

As far as I know, Dansand No Grow is exactly that. It doesn't become rock-hard, but it is broom-firm.

However, there is apparently a tougher version with a binder.