When Ann’s Labrador, Elva, started losing her fur and scratching herself raw, no one suspected the floor cleaner. Or the fragrance diffusers. Or the freshly washed sheets. After all, these were the same products millions of people use every day, the ones that promise...

Ever tried to pronounce Isothiazolinones, Methylisothiazolinone or Methylchloroisothiazolinone out loud? Yeah, they’re a mouthful. And while their names are tricky, what they do inside your cleaning products is even more concerning. These tongue-twisting preservatives...