B1/B2 Visa / ESTA

[digitaldiver]

Hi All, I have an ESTA to travel into the US new and for the next 2 years. It allows me to travel for up to 90 days provided the CBP allow at entry. We are thinking of travelling 90 in the US, then into Canada for 21 days then back to the US to leave in 7 more days for home. So my question is because we will be doing multiple entries and possibly slightly more than 90 days at once:

If I apply for a B1/B2 visa and for some reason they deny it, can I still travel on the ESTA that already have? and of course we'd have to keep to 90 days or less?

Thanks

[immihelp]

If your B visa is denied, you can't travel on ESTA.