Different beatles eat different things but mostly leaves or other insects. Also waste, by people who put in trashcans, uneaten food includings meats,and also, only beatle is called the dung beatle which feeds on just that ick
What Does A Beetle Eat?
Vw beetles drink gas and oil,the beatles probably drink milk,juice,pop,alchohol,beetles depending on what type probably eat harmful grubs,aphids,other bugs....