Pathclear was developed (by the old ICI, I think) as a product specifically for keeping paths clear. The active chemical was called simazine. Simazine acts in a similar manner to glyphosate. It inhibits photosynthesis. But unlike glyphosate, simozene remains active in the soil.
Simazine can also contaminate ground water, and in 2004, simozene was banned. So the manufacturers had to try to find something else that might be used. The current product is called Pathclear 3. They're still trying to find something else that works as well as the original and is legal.
I had the same problem and didn't want to keep putting weed killer on those pesky weeds and shoots that kept popping up through the gravel, in the end I invested in a really good quality thick weed control fabric, and I haven't had any problems since. C.cross it may be an option if you want a solution that will last?
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Pathclear has an interesting history.
Pathclear was developed (by the old ICI, I think) as a product specifically for keeping paths clear. The active chemical was called simazine. Simazine acts in a similar manner to glyphosate. It inhibits photosynthesis. But unlike glyphosate, simozene remains active in the soil.
Simazine can also contaminate ground water, and in 2004, simozene was banned. So the manufacturers had to try to find something else that might be used. The current product is called Pathclear 3. They're still trying to find something else that works as well as the original and is legal.
http://en.wikipedia.org/wiki/Simazine
http://eur-lex.europa.eu/smartapi/cgi/sga_doc?smartapi!celexapi!prod!CELEXnumdoc&lg=EN&numdoc=32004D0247&model=guichett
Nice to know that
I had the same problem and didn't want to keep putting weed killer on those pesky weeds and shoots that kept popping up through the gravel, in the end I invested in a really good quality thick weed control fabric, and I haven't had any problems since. C.cross it may be an option if you want a solution that will last?
Harry - To big a job and money