Baby safe mosquito repellent that actually works?!

Lauren • 3/28/16 & a 28 weeker born 8/3/17
I plan on going on walks and hiking with my baby this summer and I've been looking for a bug repellent that is safe for their sensitive skin. Last summer I tried the Babyganics one and it was worthless. I've been looking on amazon, but many of the reviews on products without deet say they just don't work. Does anyone have any recommendations on products or even homemade sprays that actually work? I really don't want to have to put deet on my baby if I can avoid it.