How to destroy BANNER-ADs on scene change in unity

Hey guys I integrated Startapp (that provides ads) in my unity game , when I switched the platform to iOs and deployed the game in my iphone (via XCODE) , the Banner-Ads are not getting destroyed on scene change i.e. I want my Banner_ad in only Scene 1 , but the Banner_Add doesn't hide or destroy when I switch to another Scene 2.
So I want to stop Banner_Ads from being created when I switch to next Scene.
Below is the BANNER-ADS code , any suggestion is appreciated.
Thanks !!

Code (CSharp):

1. #if UNITY_IOS
2.  
3. using UnityEngine;
4. using System.Runtime.InteropServices;
5. using System;
6.  
7. namespace StartApp
8. {
9. public class BannerAdiOS : BannerAd, IDisposable
10. {
11. bool mDisposed;
12. readonly GameObject mGameObject = new GameObject();
13.  
14. static BannerAdiOS()
15. {
16. AdSdkiOS.ImplInstance.Setup();
17. }
18.  
19. public BannerAdiOS()
20. {
21. mGameObject.name = mGameObject.GetInstanceID().ToString();
22. mGameObject.AddComponent<ListenerComponent>().Parent = this;
23. }
24.  
25. public void Dispose()
26. {
27. Dispose(true);
28. GC.SuppressFinalize(this);
29. }
30.  
31. protected virtual void Dispose(bool disposing)
32. {
33. if (mDisposed)
34. return;
35.  
36. if (disposing)
37. {
38. // Free any other managed objects here.
39. }
40. sta_removeBannerObject(mGameObject.name);
41. mDisposed = true;
42. }
43.  
44. ~BannerAdiOS()
45. {
46. Dispose(false);
47. }
48.  
49. public override void PreLoad()
50. {
51. sta_preloadBanner(mGameObject.name);
52. }
53.  
54. public override void ShowInPosition(BannerPosition position, string tag)
55. {
56. if (tag == null)
57. {
58. sta_addBanner(mGameObject.name, (int)position);
59. return;
60. }
61. sta_addBannerWithTag(mGameObject.name, (int)position, tag);
62. }
63.  
64. public override void Hide()
65. {
66. sta_hideBanner(mGameObject.name);
67. }
68.  
69. public override bool IsShownInPosition(BannerPosition position)
70. {
71. return sta_isShownInPosition(mGameObject.name, (int)position);
72. }
73.  
74. class ListenerComponent : MonoBehaviour
75. {
76. public BannerAdiOS Parent { get; set; }
77.  
78. void OnDidShowBanner()
79. {
80. Parent.OnRaiseBannerShown();
81. }
82.  
83. void OnFailedLoadBanner(string error)
84. {
85. Parent.OnRaiseBannerLoadingFailed(error);
86. }
87.  
88. void OnDidClickBanner()
89. {
90. Parent.OnRaiseBannerClicked();
91. }
92. }
93.  
94. [DllImport("__Internal")]
95. static extern void sta_addBanner(string gameObjectName, int position);
96.  
97. [DllImport("__Internal")]
98. static extern void sta_addBannerWithTag(string gameObjectName, int position, string tag);
99.  
100. [DllImport("__Internal")]
101. static extern void sta_preloadBanner(string gameObjectName);
102.  
103. [DllImport("__Internal")]
104. static extern void sta_hideBanner(string gameObjectName);
105.  
106. [DllImport("__Internal")]
107. static extern bool sta_isShownInPosition(string gameObjectName, int position);
108.  
109. [DllImport("__Internal")]
110. static extern void sta_removeBannerObject(string gameObjectName);
111.  
112.  
113. }
114. }
115.  
116. #endif