I am going to try the clearcast on my cattails. Got to try something. I will add a surfectant and also some dye to see what I am spreading. The stuff is expensive so I don't want to waste any. It has to be cheaper than renting an excavator. Plus - I think I wouldn't be able to reach a bunch of them and it is a little soft where the cattails are. Sounds like a disaster in the making! I am sure Home Depot wouldn't like that call - "Your excavator is stuck behind my pond - come get it!" Besides - how much would they charge me to rescue it!