Toads Tush is similar to another product known as Frogs Fanny and is a superbly effective treatment to keep all dry flies including CDC patterns afloat cast after cast, day after day. The pot comes with a built in brush, making it easy to work the powder into the fly whilst wading or on the bank. Toads Tush also works wonders on nymphs. It traps air bubbles around the pattern to imitate an emerger. The powder is very fine so won't matt hackle or hair.