I drive about 30 highway miles every day to work and back... and I just drove 260 miles round trip to a funeral. The front of my car is covered in bug guts. I just washed it today using Mothers California Gold car wash and a cotton wash mitt. I know the mitt isn't ideal for cleaning bugs... my dad has always used a horse hair brush to wash his cars because it wouldn't scratch the paint but cleaned well. Any recommendations on what to use or what not to use?