Can anyone tell me when a "wet" lubricant vs. a "dry" lubricant should be used and what the difference between the two is? I ride in mostly dry, hot conditions, and have been using Triflow for lubing my chain, which goes on pretty wet. It does a good job of keeping the chain lubed, but seems to pick up a lot of dirt and grime after I ride for a few weeks. I do wipe off the excess lubricant with a rag after I finish lubing the chain, but it still seems to get dirty fairly quickly. If a dry lubricant would be a better choice, does anyone have a recommendation?