You can control static (and save money) without expensive, and often toxic, softeners. Most people who use softeners are not aware of the dangerous chemicals in them and their possible effects.
My sister-in-law's physician cautioned her that softeners were the cause of her skin condition, and fragrance-free softeners were worse for her because they had even MORE chemicals that caused her skin problems. So much so, that after hugging people at a recent family reunion, her neck broke out from being in contact with the clothes of other people who use softener on their clothing.
Softeners are not suggested for use on clothing treated with flame retardant (like kids p.j.'s).
From Dreft: We do caution against using any fabric softener on children’s sleepwear or other garments labeled as flame resistant as it may reduce flame resistance.
This information is also stated on most fabric softeners (check the label).
I happen to use a laundry detergent (Charlie's Soap) that suggests you NOT use softeners of any kind with their product. Chemical build-up from softeners affects the cleaning ability of the detergent.
1. AVOID STATIC - Static is caused by over-drying synthetic fabrics. Remove synthetic fabrics before they are completely dry to avoid static. If you are drying a load of clothing that is a combination of cotton, blends, and synthetic fabrics, then set a short cycle and remove the synthetic fabrics while the rest of the load is still damp, avoiding static all together because of the dampness remaining in the natural fabrics, then finish drying the remainder of the load.
2. You can also break the static charge by spritzing the dried load of clothing with plain water. Give the dryer a few more seconds of tumbling to disperse the moisture. Adding a small damp towel for the last few tumbles of the dryer will also discharge the static.