Perfect Fitting to Filter Waste and Prevent Clogging of Waste Lines in Kitchen Sinks.....By filtering the trash, it is possible to prevent food scraps from clogging kitchen drains and unpleasant sink odors. Designed to fit standard kitchen sinks and keep cockroaches and other insects out of the drain lines in the kitchen.The kitchen sink has extremely harsh working conditions and needs, and waste from dishes regularly clogs the sink.