The windows were speckled with mysterious black dots that were not removed with regular window cleaning. These dots needed to be scraped off with a razor blade.
As it turned out, the dots were coming from a fungus hiding in the mulch her landscaper had placed around the house.
The small dots were spores released from the fungus in an attempt to dominate the world (Okay, maybe not the world, but it did look like it was trying to take over her home!). Known as Artillery Fungus, it grows mostly in decaying wood.
Moisture activates the fungus, which literally shoots its spores as far away as 20 feet! Once the spores attach to a surface, they are incredibly hard to remove. For siding, power washing is usually needed to eradicate the dots.
From windows and other glass surfaces, the spores need to be scraped off with a razor blade.
So, what can you do to eliminate this problem? When choosing a mulch, check the contents for tree bark. A mulch high in tree bark will not have an Artillery Fungus problem, as tree bark is naturally immune.
Most colored mulches are taken from various scraps of wood chips (such as old construction sites). The color is added to the make the wood chips look uniform and appealing in a garden. While pretty, this kind of mulch can be fungus carrier.
If you already have mulch in place and you are not sure if it is prone to fungus, simply rake it periodically to disrupt fungus from growing.
Elegant Cleaning Services is happy to help you remove any spores from your windows as part of our window cleaning services.