soundproofing drain pipes

hellonoko

What is the best method and/or product for soundproofing my drain pipes.

Some are cast iron and some are new ABS.

Thanks.

buddy builder

i don't know of anything specifically made to wrap pipes in. on an upstairs bath i wrap wall insulation around the pipes and tape them up good with duct tape to prevent the "fred sanford" effect. any type insulation you can get your hands on will do. i guess.