With Prune Scene you can clear your 3Ds Max scene from scripted viruses and accumulated garbage.
This allows in some cases to greatly reduce the size and accelerate saving of scene.
With this script you can quick prepare model, downloaded from 3D stocks, before merge into your main scene.
Stock Model Fixer is indispensable when using models from 3ddd/3dsky, cgtrader, greatcatalog and other resources.
http://3dground.net/en/prod/prune-scene-2180817
http://3dground.net/en/prod/stock-model-fixer-2329098