From the time a car is new, I spray silicone on the bushings 2-3 times a year just to keep the rubber in good shape (like a dressing). That also helps in winter when salt is used and the car can't be cleaned as regularly, but when the weather is warm enough, I hose off the underside just to wash away and neutralize as much salt as possible.
Back to the bushings... The silicone keeps them from developing that "elephant skin" dry out that leads to them tearing faster. I've replaced lots of bushings in my day and it sucks. Replacing the entire control arm is much quicker, albeit more expensive. Then, because one LCA would be new and the other would have x-number of miles, I'd replace them as a pair.