Deleting all world props on server start?

Is there a way to delete all world props on server start?

[lua]
hook.Add( “InitPostEntity”, “remove dem props”, function()
timer.Simple( 2, function() --Give it just a second…
for k,v in pairs( ents.FindByClass( “prop_physics” ) ) do
SafeRemoveEntity(v)
end
for k,v in pairs( ents.FindByClass( “prop_static” ) ) do
SafeRemoveEntity(v)
end
for k,v in pairs( ents.FindByClass( “prop_dynamic” ) ) do
SafeRemoveEntity(v)
end
end )
end )
[/lua]

Where do I put it?

[editline]23rd May 2013[/editline]

Also is there a way to delete vehicles like Jeeps on server start?



hook.Add( "InitPostEntity", "remove dem props", function()
    timer.Simple( 2, function() --Give it just a second...
         for k,v in pairs( ents.FindByClass( "prop_physics" ) ) do
             SafeRemoveEntity(v)
         end
         for k,v in pairs( ents.FindByClass( "prop_static" ) ) do
             SafeRemoveEntity(v)
         end
         for k,v in pairs( ents.FindByClass( "prop_dynamic" ) ) do
             SafeRemoveEntity(v)
         end
         for k,v in pairs( ents.FindByClass( "prop_vehicle_jeep" ) ) do
             SafeRemoveEntity(v)
         end
    end )
end )


Simple patterns, do you recognize them.

I fixed it shortly after posting, thanks for the help!