Below are just three credible reasons for your fitted Garbage Disposal Unit to sustain damage through clogging and ultimately fail to do its job effectively:For example:a). Foreign objects i.e. dropping an item of cutlery into the unit. b). Not running sufficient enough water during the operation.c). Over loading the unit too much too quick. The examples above can be the cause of clogging in and malfunction of the GDU.Corncobs or even fish and chicken bones fed into a GD will lead to a malfunction and clog. There should never be any cleaning type solutions used in the unit as they will corrode the working parts of the unit and may also cause damage and injury if expelled from the disposal.Professional plumbing company’s such as Streatham Plumbers can unclog your GD and advise on what to do and what not. For example, a fresh lemon cut in half, thrown in the GD once every few months will deodorise it. A fresh lemony smell will make the difference. Unclog a disposal:a). Remove the fuse or switch off the MCB for the GD unit. b). Never put your hand in the disposal, even if the power is turned off.c). Visually check the unit for any objects that ma cause problems.d). If something is stuck, then, maybe use pliers to reach in the unit to remove.e). Switch the power back on and reset any safety cut outs. A Streatham Plumber can unblock and service a GD unit.Still clogged:a). Isolate completely once more and then insert a long rod, or a broom handle to dislodge and remove the blockage. b). Rock the impeller in the unit to make sure that it is free to move (perhaps with the broom handle). The impeller is the blade(s) that spins really quick to mash the waste.c). Once the Impeller moves freely, switch back on and test.“