Problem

Seems this does work, but the program is waiting 5 seconds in between destroying bricks.

Lower the yield on line 1 and you should be fine.

while true do wait() --Lowered yield in wait function = faster iterations
    print("Bye bye bricks")
    local found = game.Workspace:FindFirstChild("Part")
    if found then 
        game:GetService("Debris"):AddItem(found)
    end    
    print("Cleaned up!")
end

Revisions

Now, this code is functional, but it isn't efficient yet. There are some syntax changes that could be made:

• 1) while loops check a condition prior to executing code. Instead of having true in the conditional spot, you can put the wait function there.

• 2) This loop is going to run forever, constantly checking for Parts even if there are none. You can either add a break statement(which breaks loops) or you can put a compound conditional in the while loop. This would consist of the and statement, along with another conditional - being workspace:FindFirstChild("Part") to ensure the loop only runs while parts are in the workspace.

• 3) With this low of a yield between iterations printing anything is going to spam your output. You should remove prints.

while wait() and workspace:FindFirstChild("Part") do
    --Since you already know a Part exists, no need to check.
    game:GetService("Debris"):AddItem(workspace.Part)
end