Effective, but keep an old, discarded toothbrush handy to clean the strainer.
I use the smaller ones in bathroom sinks: the mesh molds easily into the drain. The strainer lifts out easily to tap the cllected crud into the wastebasket. No, I don't rinse off the strainer in the sink-----it Has collected dirt that needs to stay OUT of the drain 🕳 !
Rating: 4 stars