I see that the SprayMister has a filter built into the bottom of the suction hose to help prevent clogging the nozzle. One of those sprayers came with the Scenic Express SuperTree starter kit that I purchased, but I haven't gotten around to using it yet.
Scenic Express seems to really be establishing themselves as the premier source for scenery materials. I just got their catalog #11 in the mail last week (180 - 5½"x8½" color pages); besides carrying their own supplies it looks like they stock just about every scenery material made by the other big scenery material producers (Woodland Scenics, Noch, Heiki, Preiser, etc.), plus lots of items made by smaller companies.
Their web site is at
Mark Mathu The Green Bay Route: