Capitol formulated on Wednesday :
Having read others advice to use thse products for moos/weedkilling, I have
tried them out. As far as I can tell so far, all my roof moss dosed with bio
powder has died off and the drive weeds are following suit. I find using the
powder outside on paving is very convenient, as the wind distributes it well!
The liquid I dilute 1:5 with water before applying it with a squeezy bottle
to specific weeds. Has anybody else been successful? I just need to find an
easy method of applying it to the roofs without walking on them. She has
currently banned me from roof walking!

Interesting! Is this the Formil bio powder and liquid sold by Lidl?