Q.My hibiscus tree has tiny white bugs
My hibiscus tree has tiny white bugs that fly off when I shake it but go right back on. I have also tried spraying it with Sevin but they just seem to keep coming back. They are eating the leaves.
Sounds like you're being visited by the pernicious white fly. Learn more about combating the little beasts in this article: https://www.gardeningknowhow.com/plant-problems/pests/insects/whitefly-control.htm
Sounds like whiteflies to me. Hibiscus trees are onf of their favorite hosts. I would recommend spraying with a horticultural oil.Here is a good article. Good luck.
http://blog.al.com/living-press-register/2010/04/spray_away_whitefly_problem.html