What is the next strongest mould killer ("mold killer" to the Americans) I can use?
The background to this is that I used some mould killer to stop the mould in the grout between the ceramic tiles on my bathroom wall. There is not much mould there at all and it only shows black when the bathroom is damp from running a bath but I want to stop it early.
I used "Polycell 3-in-1 Mould Killer". See
The label says it contains: disodium octaborate (3%) and benzalkonium chloride (1.5%). The label also says "This product is approved under the Sale of Pesticide Regulations 1986. HSE number 6157"
What is the next strongest mould cleaner to this one which I can use in my bathroom?
And where can I get it from? (I don't want something I have to obtain by the gallon and is only available from some obscure wholesale chemicals warehouse!)
Zak