How do I completely verbs up a paint thinner spill which have seep into my familial room floor boards? A half gallon of paint thinner leak from it's container onto the...

A half gallon of paint thinner leak from it's container onto the unfinished OSB underlayment which tops 5/4 maple planking. I originally through down cat litter to involve as much as I could, however it had seep into the OSB and I now whenever we turn on the boiler for that room the entire house fills near the fumes from the thinner.
Should l put Starch contained by washer beside...
Answers:    spread cat litter over it, clay is a great thing to remove a soft