Mothballs? Can you get up in the attic and drop some down the wall? That might drive him out.

Please read more about mothballs before using them for stuff like this.

Are you sure it's a frog? A failing hard drive can make gredeep-gredeep noises, too.

If it is trapped in there without food and water it will probably croak. ;>)

I know mothballs are nasty and not to be used in abundance or without good reason. It was the only thing I could think of that might drive the frog out. If he croaks (;~)) in that wall, the smell will be terrible until he dries up.

Since the OP hasn't returned I think Writersblock got the problem solved!

Problem continues. I put some mulch near what I think is the spot and poured some hot water there (a suggestion I got somewhere on the internet). I think he moved a few inches and I think he tunnels under the house enough to slip in.--Couldn't put moth balls in the walls, possibly nearby on the outside. Positive this is not in my computer, just a little critter who would be okay if he would just move somewhere else. Thanks for your responses.
I will keep on trying. More suggestions will be welcome.
theo