Delete row if cells equal a set of values - excel

Question

I created a macro to in order to generate a daily report. The portion of the macro that finds a value in column AN and deletes the entire row (code edited to delete rows starting from the last used row), works well.
The following example deletes all the rows that do not contain the value "CAT","BAT", or "DOG in column AN.
'False screen updating
Application.ScreenUpdating = False
'deleting all other types other than CAT from "samples" tab (excluding the header row, row 1)
Sheets("sample").Select
Lastrow = Cells(Rows.Count, "AN").End(xlUp).Row
'Deleting rows from bottom up
For i = Lastrow To 2 Step -1
If Range("AN" & i).Value <> "CAT" And _
Range("AN" & i).Value <> "BAT" And _
Range("AN" & i).Value <> "DOG" Then
Rows(i).EntireRow.Delete
End If
Next i
However, would like to create another Sub that deletes all the rows that do contain a specific set of values.
I tried replacing <> with = and ==, however neither worked and no rows were deleted

Answer 1

Below is a sample how to delete rows based on a criteria in column A. Keep in mind that if we delete rows we go backwards to avoid index errors.
Try:
Option Explicit
Sub test()
Dim Lastrow As Long, i As Long
With ThisWorkbook.Worksheets("Sheet1")
Lastrow = .Cells(.Rows.Count, "A").End(xlUp).Row
'Where you delete you go backwards
For i = Lastrow To 2 Step -1
If .Range("A" & i).Value = "CAT" Then
.Rows(i).EntireRow.Delete
End If
Next i
End With
End Sub

Answer 2

Thank you everyone for help resolving this issue. I have found that the root cause of my problem was simply the condition statement at the end of my If/Then line. The "And_" statement was saying "If cell equals CAT and BAT and DOG, then delete row" NOT "If cell equals CAT or BAT or DOG, then delete row". Replacing "And_" with "Or_" has fixed this issue.
'False screen updating
Application.ScreenUpdating = False
'deleting all other types other than CAT from "samples" tab (excluding the header row, row 1)
Sheets("sample").Select
Lastrow = Cells(Rows.Count, "AN").End(xlUp).Row
'Deleting rows from bottom up
For i = Lastrow To 2 Step -1
If Range("AN" & i).Value = "CAT" Or _
Range("AN" & i).Value = "BAT" Or _
Range("AN" & i).Value = "DOG" Or _
Range("AN" & i).Value = "" Then
Rows(i).EntireRow.Delete
End If
Next i
However, I would also like to delete rows if the cells is Blank "". Why would the Sub ignore this line?
Range("AN" & i).Value = "" Then
Thanks!

Answer 3

A site that might be able to help you be the following.
https://www.excelcampus.com/vba/delete-rows-cell-values/
I adjusted the code a little.
Sub Delete_Rows_Based_On_Value()
'Apply a filter to a Range and delete visible rows
'Source: https://www.excelcampus.com/vba/delete-rows-cell-values
Dim ws As Worksheet
'Set reference to the sheet in the workbook.
Set ws = ThisWorkbook.Worksheets("sampel")
ws.Activate 'not required but allows user to view sheet if warning message appears
'Clear any existing filters
On Error Resume Next
ws.ShowAllData
On Error GoTo 0
'1. Apply Filter
ws.Range("AN3:BG1000").AutoFilter Field:=1, Criteria1:="<>CAT"
'2. Delete Rows
Application.DisplayAlerts = False
ws.Range("B1:G1000").SpecialCells(xlCellTypeVisible).Delete
Application.DisplayAlerts = True
'3. Clear Filter
On Error Resume Next
ws.ShowAllData
On Error GoTo 0
End Sub

Answer 4

I would tend to do it this way:
Sub DeleteRows()
Dim i As Integer
Dim sht As Worksheet
Set sht = ThisWorkbook.Sheets("sample")
i=1
While sht.(i,1) <> "" 'Assuming first column is full of data to the bottom
If sht.Range("AN" & i) = "CAT" Then
sht.Rows(i).EntireRow.Delete
Else
i=i+1
End If
Wend
End Sub