After Ben wrote his post above, he and I had a discussion about whether or not you should use the trichlor. We came to the agreement that if the trichlor tabs you have are individually wrapped, you can just save them til next season because in all honesty, you don't want your CYA any higher. But, if they are not wrapped, then you should go ahead and use them up. Storing unwrapped trichlor from one season to the next is not a good idea.

(The advice to not use them unless your pH comes up some first still stands as does the directive NOT to just throw them in the trash.)