Here's my method of cleaning bugs, etc.
Microfiber cloths with hot water. If really stubborn use a little baking soda on cloth.
I buy mine at Sam's--24 for $10.00.
Good for cleaning everything with just water-- mirrors, leather, etc, You use them over and over with just washing and drying.
I saw some at RV rally (more expensive) and have been telling all my friends to use in house, boat, RV. Cheap and good!
You can get at Walmart or other stores but not as cheap or good.