Check with the manufacturer. Many pesticide-type products have an 800 number so you can call with questions. Keeping the product cool but not cold at all times and well sealed will of course extend viability.

I wouldn't toss them unless being a poor choice for container gardening is an inherent issue. As long as they're dry, they should be fine. The 2 primary concerns about your soil would both pivot on moisture issues - whether the soil was saturated or remained wet for an extended period. The result of lengthy saturation and the anaerobic (airless) composting that takes place under those conditions includes the production of organic acids that can lower pH to unacceptable levels. Soils that remained damp for an extended period, but not soggy, might have suffered structurally due to soil materials breaking down from the composting process, and the value of a soil (to the plants it supports) lies primarily in its structural integrity and how well it is able to retain that integrity for the intended life of the planting or the interval between full repots. All plants are sensitive to certain fungi, but mostly under certain cultural conditions. For instance, as long as you don't over-water, it's very unlikely that there is anything lurking in your old soil that would hurt the plant that wouldn't also be in the next product you might buy. Virtually all plants live in perfect peace next to thousands of different bacteria and fungi that are harmless under favorable cultural conditions but could become pathogenic under unfavorable cultural conditions, with the main player in that balance between good and bad being air:water retention issues. Al

I don't use liquid fabric softeners and most service techs will say not to use it, it's the worst thing you can do to your clothes(especially 100% polyester) and washing machine(clogs up everything). As for shelf life, here's an article: http://laundry.about.com/od/laundryroom/f/faqdetexpiratio.htm Only buy what you can use in a six month period and it's probably smart to keep powder in a zip-lock baggy or air-tight container.

First off,I like Watco and use it from time to time. In the hands of all but the most highly skilled it out performs more expensive oils hands down. With that out of the way,a rant and some insight about Watco. Watco was bankrupted and forced out of the marketplace for a few years until Min-Wax as I recall reformulated and resurected the brand. The brew ha was over spontanious combustion of rags used to apply the oil. The instructions on container instructed user to dispose of rags in covered metal container filled with water or spread on concrete to dry. Some lawyer convinced a jury that warning was insuffecient and Watco was held liable for millions in damages to a damn fool that burnt his family up in their home because he disposed of rags in his household trash. Personaly,i think they should have thrown him in jail instead of making him wealthy.