"Sink Stainers: This is used in Kitchen Sinks as Filter Cup, to stop food waste particles to pass on sink and clog the sink pipes and spoil the drainage system. This is usually used while washing vessels, and filters out blocking particles to pass from sink, it will easily collect all this and we can easily take this sink stainer out from sink and put the collected waste in dustbins, This is specially designed in such a way that only water and non blocking items can pass from this stainer net. This filter cup is made of good quality PVC, no chance of getting rust or breakdown.
The main reason for bacteria / cockroaches / other insects is waste particles blocked in the sink pipes, keeping it clean may also keep them away. With this simple step you can also keep kitchen hygiene and avoid bad drainage smell."