how much do these cost? if they are cheap I want to get a bunch and send them to places with dirty water. and i'll keep one in case I need it after a storm or something.

I love these! I want one. they would reduce pollution.

This is one of the best things scientists invented ever! I hope people start to not use a lot of water after hearing this! >:3

wow i wonder if they give these out for free o people who have dirty water