My dishwasher leaked, the water went down into the basement ceiling, and went out to the exterior on top of the basement window. Multiple fans are now used to dry the cabinet and the structures in the ceiling, 3 50-pint dehumidifiers and one AC are used to dehumidify the basement room, and one air purifier to reduce the dust in the air.

I wonder if I can DIY the water mitigation or I must hire some professional. My goal is to prevent structural damage and mold. Is air dry enough? Is desiccant needed? I saw somewhere on youtube a spray is applied after drying. Is it necessary? What spray I shall use?

Here are some photos.

Where dishwasher was installed. Right side is slightly lower than the left.

Basement

Outside

By the window of the basement.

Inside of the basement ceiling, around dishwasher, from right to left.