I bought these because I was getting major static this winter even with 2 dryer sheets. I tossed them in with some dryer balls, and my problems were solved! Now I have the dryer balls for fluff and the static sheets to remove static, and my clothes are fresh, dry, and non-clingy with not of that greasy dryer sheet residue or fake floral smell! I found after about a month that there was some static, but I threw them through the wash with my next load (like it says on the box) and the static was gone again.As an added bonus, I have also found that my dryer vent no longer clogs with lint - I guess no more of that waxy dryer sheet chemical to stick up in the pipes!