I've been asked to quote for treating some light moss on 3700sqm of tarmac tennis courts. For smaller domestic jobs I have always used an acetic acid cleaner to good affect (eg. Algon), however, I am a bit worried about the lingering vinegar smell at a regularly used tennis club.
I have used other cleaners in the past, with varying degrees of success, but to be honest none have been as reliable as the acid-based cleaners.
I am considering using Sapphire for this particular job, as it works out more cost-effective for the large area, I am slightly concerned about its effectiveness with the lower temperatures we are now experiencing. Has anyone used Sapphire (or similar) during the winter months and got satisfactory results? Or should I stick to what I know works for me and tell the club to put up with the vinegar-like smell for a couple of weeks?
All recommendations and advice appreciated as always.