dilbert firestorm wrote:
I have a bunch of extra bricks (actually leftover from the
construction of the house) that is used as a garden barrier.

what I want to know if there is something that I can fill the 3 holes
of each brick. I'd like to keep out the dirt, weeds and insects that
fill up some of the holes.

Great Stuff?

Give the holes a squirt and, later, trim it off.