After every dab you do, just take a Q-Tip dipped in isopropyl alcohol and give it a good swirl around the atomizer. Like most dab rig vaporizers these days, the Carta 2's atomizers are pretty durable, so don’t have to worry about feeling like you need to be too gentle with the cleaning aspect of it. Get in there as well as you can and swirl the Q-Tip around to make sure you get the resin off from your most recent session. Check out our handy Vape Cleaning Sticks that come preloaded with isopropyl alcohol. Another thing some YouTubers do to get rid of buildups in the atomizer is taking the flat end of a dab fork to chisel off anything that is no longer coming off with alcohol.