I have mailed my return twice and irs has no record of either.Can I efile now or do I need to mail again?

How long ago did you mail your return?  It takes at least 4 weeks from mailing a return to see anything on the IRS site---and under the present conditions longer.  

TurboTax will not know anything about your mailed return, and will continue to show “Ready to Mail” on your account.  TurboTax will not know that you put your tax return in an envelope and took it to a mailbox.  TurboTax does not get updates on mailed  (or e-filed) returns.

Wait at least 4 weeks from when you mail a return and then you can check the status on the IRS site. https://www.irs.gov/refunds

State returns have to be mailed to the state.

https://ttlc.intuit.com/questions/1899433-how-do-i-track-my-state-refund

If you mail a tax return (or a payment) to the IRS, it is a good idea to use a mailing service that will track it like UPS or certified mail so you will know it was received.