how can we prevent leech from fields?

Answer 1

Those fields are called leaching fields because they are designed for the effluent (liquids left after solids are settled from household waste) to flow through and soak into the soil. You don't want to prevent that - you want to ensure it. If they get clogged then either have tank pumped out or put in one of those biological products (bacteria starter kits) that encourages dissolving the clogging solids.

Answer 2

The causes of drain field failure are solids, soaps, oils, and grease getting out into the field. There is a product that can be added to your septic tank to help breakdown these substances. It's a super concentrated bacteria and enzyme product specifically cultured for its ability to digest septic waste quickly and efficiently, and it can be found at the site listed below:

Answer 3

are you speaking of the critters or the water drainage effect? How can we prevent stupid questions????!!!!!