Sukar Plugs are easy to install as demonstrated below:

Advantages

• Integrity of the hole is guaranteed
  for as long as the plug is instlalled, no collapsing - under any conditions!
• Environmentally friendly
  manufactured from environmentally friendly materials, can be recycled
• Light weight
  cost effective, easy to transport and can be handled by a single person
• Reduced risk
  Ensures the safety of people and animals in the area preventing them from getting trapped in the hole. 
• Re-usable
  can be used over and over again which makes it a cost effective solution
• Time saver

    Holes can be drilled in advance as the hole can be sustained for a longer period and
    is still fresh after pulling the plug - no extra time is spent re-preparing the hole again.