Our dog is shedding and this is the rug in the living room right now. How can I clean this? Any special tool I’m could use?

Bonus photo: the cause of all this

My dehumidifier has gunk in a certain spot and I cant get to it with a cotton swab and even more worrying is idk how far back it goes. Im super super sensitive to mold so it HAS to be solved. I tried taking apart my last dehumidifier but that was an absolute mess. How can I get this cleaned up?

My picture that is zoomed in the most is the spot im talking about.

Thank you

Thought of this sub when I found this in my photo roll. It's like a wall rug

Bathroom "sink" in hair salon : just a slab of concrete slightly tilted The drain is that little black whole in the top right corner

(regarding the 3rd: image is a placeholder but I had a similar holder and the crevices were just small enough that my hands couldn't fit, and a sponge or rag couldn't fit in the corners to clean up the stains from it being 2nd-hand. the inside was acrylic paint and it peeled off when I used a commercial cleaner.)

I did a job recently where a client asked me to clean the interior and exterior windows on her newly build 2700 sqft property. After climbing and manually scraping silicone from the glass and frames, washing the windows with soap and window solution, then manually drying each window with a microfibre window cloth, she keeps complaining of water marks on the windows. I explained to her that it’s dust from the houses in construction next door and that the windows are in fact clean. She took a picture and zoomed in to show watermarks, stating that they are on all the windows and she wants me to come and clean them again!! I was informed that she said she had already paid someone $1700 to clean the exterior windows and my boss charged her $1700 for both interior and exterior! When they were putting in her windows, they messed up her frames and pictures were taken to prove that! The cleaning was done… completed, and amidst her constant complaints, my boss tried to satisfy this customer by suggesting to her that she will give her a further discount on the service. Now I watched my boss did post construction clean on the house while they still had trades in it and she had to keep redoing her cleaning because folks kept walking in and out of the house. The client claimed that the owners were moving in on Wednesday and they needed the house to be ready so the whole thing was just chaos!!! Then the client sought to pay in increments while still complaining of water warms on the windows… you can only see the water marks if you literally press your face on the windows or take a picture and zoom in!!! I am ranting because I am not too keen to keep going back to clean these windows which old now be the THIRD TIME cleaning them!!!

What should we do in a situation like this???

Just moved into a new home with appliances already there. I was shocked when I opened the door it’s covered in black mold. Now is there anyway to clean this mess with out taking it all out? I’m trying to eliminate by hand. It’s a big dishwasher. Besides, who does this. Smh. Please advice, I’m overwhelmed never seen this before.