Delete Rows :: Where Specific Word Appears

I have a spreadsheet that I need VBA Code to do the following

1) Delete all rows where the word totals appears in Column B for eg "Totals for Vehicles Stocked in 0706" "Totals for Vehicles Stocked in 0707" etc

2) Delete all rows where the value in col m is less than 45

I have written the code, but cannot get it to work-see my code below

Sub Del_TOTALS_Underaged()
FinalRow = Cells(65536, 2).End(xlUp).Row
For i = FinalRow To 1 Step -1
If Cells(i, 2).Value >= "Totals" Then
Cells(i, 1).EntireRow.Delete
If Cells(i, 13).Value < "45" Then
Cells(i, 1).EntireRow.Delete
End If
End If
Next i

End Sub