The present disclosure is directed to ion generators and their enclosures that include a base, a non-linear wall projecting from the base, a top connected to the non-linear wall a top connected to the non-linear wall, wherein the base, the non-linear wall and the top form a closed space, and at least one ionizing element extending from the enclosure, wherein the at least one ionizing element is configured to receive a voltage capable of producing ions from a power source in the closed space.