Noise
A food waste disposer should be quiet when operating and shouldn’t vibrate the sink and counter. Look for a model that has a seal and sound insulation to help prevent noise. A sink baffle will also help. A baffle acts much like a muffler on an automobile. It prevents sound waves from escaping the grinding chamber.

Clog-resistant
In order to make your everyday kitchen clean-up easier, look for a disposer that comes with a sensor to detect jams in the grinding chamber and increase the torque when necessary. If the model has an automatic reversing mechanism, this will help to extend the life of the grinding elements. Look for a wall-mounted on/off switch also. Installation will be easier with a quick-lock sink mount.

Easy and safe to clean
The disposer should have no areas where food waste may pool after use. That is to say, it should easily rinse clean and not require doses of bleach or other cleaner to avoid an unpleasant smell. Make sure that your disposer is made of stainless steel components to prevent rust and corrosion.

Cleaning Kits
Cleaning kits are available which will keep the grinding chamber clean and free of build-up. The kit contains a small packet of powder which is inserted into the chamber and disposed of, just as if it were waste. The powder will react with water when being ground and scour the grinding components. The kits should be available from the manufacturer.

Electrically safe
It should have a motor strong enough to resist stalling. But when it does stall, it should interrupt current using its own safety device instead of relying on the circuit. It should then reset itself after a timeout period and not require crawling under the sink to push a button. The Disposer should have self cleaning ability provided water tap and power is turned ON.

Power
Choose a food waste disposer that has more than one grind stage. The best models have three grind stages that allow you to dispose of almost any type of food waste. Make sure the grinding motor operates at up to five RPM and one full horsepower.

Install
You should make sure that the unit you want to buy fits your sink. It should take only few minutes to install a Food disposer and it should fit in every kitchen - whether small or big, The size of kitchen mustn't be any issue with its installation.

Appearance
It should be obvious when there is a waste disposal installed in a sink. If it's too subtle, it might be missed and that could be dangerous.

Hygiene
This is a very important issue concerned with a waste disposal system. The product should be leak-proof and should be tough and durable. If metal is used, corrosion factor should be kept in mind as it would affect the efficiency of the system in long run.

Usability
Some plumbers say that waste disposals should only ever be used for the tiny scraps that come off a dinner plate at the end of dinner. If that is the case, why have one? The whole point is that anything that is food, and not a bone, should be able to go down. Get a disposer that does the job or don’t get one.