Jim Weir wrote:

Another thought is to put some sort of oven pan with a mat of some sort that
would let the gasoline evaporate slowly from under the mat. The problem is
finding a nonflammable mat that gasoline will not attack chemically.

My suggestion is to use one of the hot water heater overflow pans from Home
Depot (or the like) and fill it with a clay-based cat litter.

George Patterson
You can dress a hog in a tuxedo, but he still wants to roll in the mud.