Can you use non-LED-dimmer switch for LED lights?

The flickering is bad enough when they’re on full. When they’re dimmed, it’s worse and drives me a bit nuts. Fortunately, my wife found some plug-in LED nighlights that work great, and I just don’t bother using the dimmers on other LEDs we have (we try to use mostly LEDs). In places where we want dimming, it’s not places where lights are on a lot of the time, and we use incandescants. Well, as long as we can still get them.