I use two products. Osage AIVS Enzymatic Stylus Cleaning fluid and Lyra SPT.
I recently started using the Osage AIVS as a way to do a little deeper cleaning with it's included brush. It seems very effective. And, I've been a long time user of the Lyra SPT and, while it does clean, I always thought of it as more of a lubricant and protectant that helps get the stylus deeper into the groove while minimizing wear on it.