Compost has unpleasant smell - Too wet, not enough oxygen: add dry material and aerate.
Compost smells of ammonia - Too much nitrogen: add carbon material and mix.
Compost not working - Too dry: add water or Not enough nitrogen: add nitrogen rich material and mix.
Too many flies - Kitchen waste exposed: cover with dirt, leaves, etc
Ants in the pile building a nest - Too dry: add water and mix
Pale green mould in pile - Too wet: add dry material
Odo urs may come from your bin when it is overloaded with kitchen wastes. If this occurs, gently lift up the entire contents of the bin to introduce air. Stop adding kitchen wastes until the worms and micro-organisms have broken down what food is in the bin. Check the drainage holes to make sure they are not blocked; drill more holes if required. If the moisture level seems right, the bedding may be too acidic from citrus peels or other acidic foods. Adjust pH by adding a little lime and stop adding acidic wastes. Collect your kitchen wastes in a covered container to prevent introduction of fruit flies.
To discourage fruit flies, keep the kitchen wastes covered at all times and do not overload the kitchen bin. Keep a paper sheet, moist piece of cardboard or moist old carpet on the surface of the vermicomposter. Banana peels attract fruit flies limit the number put in or chop them up very fine. If flies persist, move the bin to a new location where flies will not be bothersome.