Easy way to remove bugs from your bike without using chemicals is with a bit of magic sponge. A touch of plain water and it cleans away the most stubborn ones. Can be purchased at Daiso for 100 Yen a pack (probably $3 in Australia Daiso) and only need a small square.
I keep same moist in a small ziplock bag with some paper wipes to clean my visor. I originally had one of the V brand visor cleaner kits, which are brilliant but expensive and consist of just some magic sponge in a V shape and some high quality paper towels.
I am still using the small plastic pouch and towels (which are like a kemp not strictly paper) but you can just make your own kit using zip lock bag and microfiber cloth – but the paper leaves no streaks.
Much better than swamp water and broken window wipers at gas stations.