const string SearchItemName = "duck_vipwhite";

var userNames = new List<string> {
 "spextor", "audrey", "clepsidra", "polandiaa",
 "Kampagne21", "Kampagne22", "Holperik", "Iz-nogoud", "vampireacco"
}.Distinct();

Log("Starting room checks...");

foreach (var userName in userNames) {
    try {
        var rooms = SearchNavByOwner(userName)
            .Where(x => x.IsOpen)
            .ToArray();

        foreach (var room in rooms) {
            if (EnsureEnterRoom(room.Id) == RoomEntryResult.Success) {
                var searchFurni = FurniData.FindFloorItem(SearchItemName);
                if (Furni.OfKind(searchFurni).Any()) {
                    Log($"Item \"{SearchItemName}\" found in room \"{room.Name}\".");
                }
            }
            Delay(2500);
        }
    } catch (Exception ex) {
        Log($"Error while processing user \"{userName}\": {ex.Message}");
    }
}

Log("Room checks completed.");