If babies are human petri dishes, then dirty strollers are the plague.Clean up your Bugaboo’s act with BuggyLove organic cleaning solutions, designed specifically for strollers.The brainchild of an NYC mom who’d had enough of her fancy baby carriage looking like a frat house on Sunday morning, the collection includes a polish for demucking the frame, a solution for removing stains from the seat, a rose-hip spritz to make everything smell new, and a chemical-free lubricant that silences squeaky wheels.All the ingredients are natural, so there’s no need to press the panic button if baby snacks on her shoulder strap.And we think that’s ride on.Available online at buggylove.com, $50.CLIMB ABOARD Halloween TrainWhat: Hitch a ride on the Snoqualmie Valley Railroad, do crafts, and monster mash to live music. Why: Stave off shivers with hot apple cider.When: Sat. & Sun., 11 a.m.-4 p.m.Where: Northwest Railway Museum, 38625 SE King St., Snoqualmie (425-888-3030). Adults and teens, $10 with costume, $12 without; children, $6 with costume, $8 without; under 2, free.FROLICAutumn FestWhat: Trick-or-treat, listen to stories, and catch a puppet show. Why: Professional pumpkin carver Russ Leno’s fancy-pants jack-o’-lanterns are something to behold. When: Sat. & Sun., 9:30 a.m.-4 p.m.Where: Woodland Park Zoo, N. 50th St., b/t Fremont & Linden Aves. (206-548-2500). Tickets online at zoo.org. Adults and teens, $11.50; children, $8.50; under 3, free. One child 12 or under in costume admitted free with a paid adult.CELEBRATECarnavalWhat: At the new exhibit, folk art and projects peek at how people party around the world. Why: This week’s Dia de los Muertos activities make it a full-on fiesta. When: Thru Jan. 8, 2012. Where: Burke Museum of Natural History and Culture, 17th Ave. NE, at 45th St. (206-543-5590). Adults, $10; children, $7.50; under 5, free.