In article .com, hobbes wrote:

To seal up the gap used foam sealer. These are available at Home depot
for about $US 7 per can.

Mice can and will chew through that stuff pretty easily. Mortar is a much
better choice.

One can has more than enough. Try and make
sure you find all your holes because once started the can is good for
about 20 minutes. What happens is the foam starts to set in the
plastic feed tube if you do not keep on spraying. So you got to use it
up and fill all your holes in one shot.

I've had success before with putting a sheet metal screw into the end of the
feed tube when I'm done spraying. Let the stuff set, then grab the screw with
a pair of pliers and pull it out -- and a plug of dried-up foam comes with it.

--
Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.