I can't answer any of your "how to, what for questions, but just take the good old speghetti colander out of your cupboard and put it in the toilet! This is great as you can swish it around to clean the contents and then "inspect" the "outcome". My husband said I could do this as long as I threw the colander away after. It works really well and hopefully you will get a good "catch". Best of luck to you and good health.