No mask. If you need a mask while spraying today's lawn chemicals, you are doing something wrong. Generation of respirable particles means movement off target of pesticides. I say today's lawn chemicals because in another time, I used to apply Daconil, Diazinon, Dursban or Turcam to lawns. The labels did not mandate respirators, but I knew better. Which is why I am still around. Gloves, I use the green nitrile gloves that goes up to my elbows. Lastly, I will not spray in trendy shoes, or macho-wacho hiking/construction worker boots. I have always worn knee length rubber boots. Long pants of course and a button down tight weave long sleeve shirt. I am in the tropics, but any kind of t shirt feels like a sweater to me outdoors in the sun.