Dr JB"s Hummingbird Products was founded to build upon the best features of today"s popular feeders, but solve their problems * High quality, crystal clear, wide mouthed glass bottle for easy cleaning and mess free filling * The yellow, flower shaped ports attract hummingbirds * Moats around the feeder holes to help repel insects * Just add sugar and hot tap water directly to bottle, swirl, attach the base, and you"re done!