NPC weapon drops disabling

I have been looking forever all over the internet. And I have not found one decent way to A- get NPCs to stop dropping their weapons or B-get the pick up notifier to disappear. I have been wanting to make Gmod videos, but I always hit a block due to the fact that weapon pick up notifications always appear no matter if my head and kill con notifiers are off. Can some one please post a way to get rid of the icons or just stop them from dropping weapons all together?