Are you sure?
I dug around a bit and came up with Glyphosate and diflufenican. Of course this could be out of date info.
No. They removed the potent pre-emergence ones simazine & atrazine a couple of decades since. See:
Basically bad practice meant it was getting all over the place and given that they found it could be carcinogenic in women.
It is pretty well ineffective. The banned stuff was quite good.
Paraquat gets a bad press but it was really a very effective knock down weedkiller. Problem was people used it to commit suicide.
Include MSDS in the search terms and you should get it.
They have to list it in the MSDS in this case:
2-4 DAmitrole
Diuran
Compared to the original formulation with its persistent preemergence component it is rubbish and you are probably better off with glyphosate.
However, there is more than one product going around with the same brandname of PathClear so no wonder people are confused :(
Glyphosate
Diflufenican
1,2-Benzisothiazolin-3-oneYou have to be careful these days too. Some prediluted consumer stuff sold with the Roundup brandname is not pure glyphosate and contains a faster acting component in addition. Great trick selling impure water very expensively to gullible consumers (ditto for windscreen wash).
Don't support Monsanto & Roundup! Always buy the rival or own brand version with the highest % of glyphosate active ingredient instead.
Blimey, I'd imagine sulphuric acid might be an idea!
Brian
It took me 2 minutes to find and read the COSHH data sheet (silly gardeners)...
A bit more googling:
1 - 14% 2,4-Dichlorophenoxyacetic acid 2 - 28% 3-Amino-1,2,4-triazole 3 - 46.7% 3-(3,4-dichlorophenyl)-1,1-dimethylureaNone of those is glyphosate, and (1) is banned in Canada and there's lots of scary stories about dioxin contaminants and it maybe being carcinogenic.
On Sat, 19 Apr 2014 20:29:46 +0100, Phil L wrote: [about repointing]
...
is there a reason why you didn't simply brush the completely dry mix into the joints and then let the natural moisture in soil/atmosphere work its magic?
I'm particularly interested as I have around 70sqm of stone flags to repoint and want the most effective way of doing it that is both quick and long lasting.
Gylphostate like any systemic weed killer, works by plant absorbing it ... so if you have removed the visible weeds it won't work.
When I do for example paving, I use a Monsanto product - Boracil (Also sold as Bromacil
First one I found too.
Unfortunately there is another "Pathclear" with different glyphosate formulation. It is no wonder that people get different results.
Neither are anything like as good as the old formulation.
HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.