"I keep a 30 gal plastic trash can as a water supply in my greenhouse and refill it when necessary. " Don, that's definitely the easiest way to go, I have to water seedlings indoors with a pump sprayer and don't have storage outside so the Gnatrol is what I went with. James _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net http://lists.pacificbulbsociety.net/cgi-bin/…