It's likely plastic with a recycled bonded fabric backing that will come apart when wet. I'll bet you're stuck trying to hand alcohol scrub any stains with a toothbrush? God bless you for not giving up. : )
How you clean it would depend on the materials/fabrics it is made of. If you have the care tag, you probably also have the fabric information tag. If you know that the fabric is a washable one, try Woolite by hand or on the gentle/handwash cycle,using cool water, then air/line drying.
If you do not know about the material's washability, try googling it .
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