Quote Originally Posted by Gissert View Post
I got my first 275 this year. It contained a liquid yeast and the residual had a very stron ammonia smell. I flushed it out with water til it ran clear out the drain, then filled it with a bleach/water mixture and drove around for a few miles.
Be very very careful here. Two things that you never want to mix together ever and most especially where ventilation is poor, is ammonia and bleach. Many people have died quickly from the toxic fumes given off when ammonia and bleach are mixed.

http://chemistry.about.com/od/toxicc...nd-Ammonia.htm