Baits used for isolating chytrids from gross culture include pollen (especially pine, spruce and sweet gum), insect exuviae (shed exoskeletons), processed shrimp chitin, white onion skin, hemp rope, hemp seeds, snake skin, boiled grass leaves, heat-treated algae (50 C for 1 min), cellophane (usually in the form of dialysis tubing), corn husks (also known as corn straw), defatted blond baby hair, rosaceous fruits like rose hips, lens paper, and birch twigs. This is by no means an exhaustive listing of possible baits. Reading Sparrow's Aquatic Phycomycetes is a good way to find out what kind of bait to use as he gives a nice overview of collection and isolation techniques in the introduction and lists the host/substrate from which a particular chytrid was isolated with each species description. It also helps to read the scientific literature to see what kinds of baits researchers are using.