The other day we saw a new product called Winter Pill made by SmartPool. It's a round ball filled with some sort of enzyme-based liquid which is supposed to float in the pool over the winter making the pool easier to deal with when opening in the spring. (It says you can use it with normal closing procedure or without.)

http://smartpool.com/website/recwatertec/winterpill.htm

Our pool is closed as we normally close it but we bought one of these things to try.

Anyone familiar with them? Any reason I shouldn't put it in?

Thanks-
Vickie