Recently Ive been doing a good bit of overhead welding but have been using ear plugs b/c of shop noise. The subject of sparks/slag in the ears came up and a few guys said they use plugs all the time mostly to keep foriegn objects out. I wonder though how well foam plugs are going to do against slag. Ive had blobs go thru heavy pants like they werent there, wander down my leg and burn a big hole in my heavy socks. How really well is a foam plug going to absorb something like that? In fact it seems as though they might cause more trouble as they turn the foam to a hot liquid. Apart from muffs what really works?