How long does thc stay in your urine?

im on probation and i used to take clean urine with me when i take a drug test but last time i almost got cought so im done smoking until i get off probo the last time i smoked was on june 13 nd i smoked everyday for 5 days im not sure when ill take my next dfug test but it can be anyday from now so i need some advise on how to get clean !!