I jetwash my patio every year so why are there still Black Spots and why do they seem to be getting worse?

Sadly jet washing will never get rid of your Black Spots, Reason? They are a living infection, when you come along and jet wash them, you’ve really only watered them and they love the challenge of gripping on and bedding down further. Monty will seek them out and nip them off at the root, we’re not allowed to say “Kill” so we’ve ‘eliminated’ them. You’ll notice they start to lighten in colour and fade away. Black Spot will find it very hard to germinate wherever Monty has been. When they do start to move in again, you’ll know exactly what to do to combat the situation, use Monty Miracle Patio Cleaner!