Alytimes Mirror Disco Ball. Amazon. $16 (was $22) Buy Now. Putting up a disco ball is a much easier (and significantly more aesthetically fun) fly repellent that also doubles as outdoor decor.

A disco ball projector during the partial solar eclipse on Oct. 25, 2022 in Potsdam, Germany. An enlarged solar image is shown in the lower right corner. (Image credit: Cumming et al.) ...