I had great success with DB100 last year and have just purchased one pail of DB200. I will be applying it within next few weeks on banks to see if i can raise water level any. I will post my results. The ease of application is what helped sell me on DB200 vs DB100-110, plus supposedly it's much stronger product. If it's 5 times stronger than DB-100 then I can't wait to see the results!
