More than stain removal
A visually clean surface is not necessarily the same as a properly addressed contaminated area. Materials beneath or around the visible area may matter.
Keep the affected area contained
When practical, reduce unnecessary contact and traffic through the area until you know how it should be handled.
Describe the surfaces
The first useful details are often the size of the affected area and the materials involved, such as carpet, flooring, furniture, walls, or vehicle upholstery.