Sorry I have no one to ask this question to..

Sa
Hello girls,  I'm 33wks and just bought about 6 bottles. Could someone kindly tell me what I do after I buy baby bottles? Do you just throw them in the dishwasher for a rinse or wash with detergent? Or don't wash at all. Thankyou any advice is so much appreciated- I've googled but can't find the answer.