No, you should not use pool chlorine in your washing machine. Pool chlorine is much more concentrated than household bleach and can damage your washing machine, clothes, and create dangerous chemical reactions.
Pool calcium chloride and calcium hardness increasers don't technically expire but lose effectiveness over time. Properly stored, they remain usable for 3-5 years, though moisture exposure reduces their potency significantly.
Pool stabilizer (cyanuric acid) doesn't technically expire when stored in a cool, dry place. However, granular stabilizer can clump and lose effectiveness when exposed to moisture, while liquid forms remain stable longer.
While technically possible for very short periods, maintaining a clean pool without proper filtration is extremely difficult and not recommended. Filters remove debris and contaminants that chemicals alone cannot handle effectively.
