### Laundry Powder **Pros:** * Usually cheaper than gel and capsules * Stable during storage * Easy to adjust dosage * Effective for heavy stains **Cons:** * May not dissolve well in cold water * Requires dry storage **Conclusion:** According to Mary Gagliardi, a cleaning expert and staff scientist at a household chemical company, powder is great for very dirty clothes and work uniforms, and is convenient for those looking for eco-friendly packaging in cardboard boxes. ### Laundry Gel **Pros:** * Liquid form prevents stains on clothes * Dissolves well in cold water * Convenient for spot treating stains * Easy to dose **Cons:** * Bottles are bulky * May be less effective on heavy stains **Conclusion:** Gel is the optimal choice for washing in cold water and removing greasy stains, notes Mary Gagliardi, a cleaning expert and staff scientist at a household chemicals company. ### Capsules and Tablets **Pros:** * No measuring required * Compact and easy to transport **Cons:** * More expensive than other products * Dose cannot be adjusted * Not suitable for pre-treating stains **Conclusion:** According to Laura Johnson, a research and development expert at a home appliance laboratory, capsules are convenient for people with a consistent laundry volume without heavy stains and for those who use laundromats.