He...I just assume a he...maybe a she...that would be nice...
Anyways said they tried bug remover. Can you not read?
Check your auto parts place for a small sponge covered in a soft mesh. That is my best friend in removing all sorts of crap. The mesh on the outside of the sponge was rough enough to scrape some stuff off but if you keep it full of soapy water and use the bug spray it will not scratch.