I use silicone foam plugs extensively. I keep a pair in my pocket at all times. I use them in my shop, when shooting and at night because my wife snores like a locomotive. They work just fine. Just make sure you use the silicone foam type. The spongy foam ones just do not do the job.
The silicone type must be rolled small and inserted into the ear canal, not just propped up on the outside.
I also occasionally use the kind with baffles that are on a string. I think these actually are better sound stoppers but not as comfortable. However, easier to insert. On the range I cannot hear range officer commands when wearing these.