so what is it? One person has said it was excitement from bees and others dont know. We cover it in general cleaning but i dont like saying its one thing without actually knowing.
I pre soak with GG4, then use a 3 x 6 ish -3/4 white scrubby on the pad holder thingy and blast away…it comes off, dwell time is critical, let it soak…work in the shade around the sun if you can so the glass stays wet longer. Boars hair brush may work well too…when I see it I switch brushes to the boars hair, it takes it off with wfp that way pretty good, second story stuff…lowers I will usually scrubby them. I had a client with bee hives next to solar panels in an orange grove…I about killed my shoulder that day, very sucky.
I thought artillery fungus was black…he’s in OC unless there is a load of forest humus in the landscaping its probably bee doo. Easy to tell, bee doo comes off much easier and you don’t need a blade.
You know up here in Seattle we never see stuff like your saying, artillery fuungi yes but not this stuff, but just this year , the last few months I’ve been seeing it ! It’s sort of golden color !
In SoCal where I grew up we use to see it on our cars a lot, same looking stuff, not lots but specks . Someone there once said it was Jet fuel not wet but dried, I don’t know but it is a bit tough you need to scrub it hard . Like what the Free-Man said the boar hair works great !
Bees rarely land on windows, their poop often does, depending upon what’s around as far as trees shrubs makes a difference…or if a hive got loose., here it’s almost seasonal. March - June we have heavy bee terds. Especially when orange blossom hits, it’s a war zone and definitely an issue I deal with every year. For example, one house I did, half the house was practically painted yellow, hives were a mile away, but their target plant was all around, they fly for miles and the trajectory was right over this house, those were so bad we bladed and scrubbed. Did we or the h.o. See bees on her windows? No… They unlike us can fly and crap at the same time. I have seen artillery fungus, it’s harder, black, tends to stick on the white frames , and rare around here unless they get their humus from a certain vendor it’s non existent in theses parts. Bees on the other hand are all over the place here as it is a big business in theses parts.
I see the exact same thing on some windows I clean. They usually come off easily with a white pad. What I find interesting is that the only windows I ever find them on are windows on one particular street, which is at a higher altitude then the rest of my work.
Flys will leave the yellow specks also, we’ve seen them mark up high windows within an hour of cleaning if the homeowner leaves the doors open, so they can make a pretty nasty mess.
We have seen more bees up here than usual this year, suspect because of the droughts they migrated to the higher/wetter altitude. Maybe a similar migration pattern is the reason people are noticing more yellow specks this year.
Its bug debris, I see it all the time here in San Diego. The easiest and fastest way to remove it is by using very fine steal wool. It wipes right off and there is less risk of scratching the glass with your blade.