I just read an article where a beetle called the WATER HYICINTH HOPPER is being deployed in the US to help control the weed. The project is in test stage but sid that, in quarantine situations, the bugs seemed to have a signifigant effect on controlling the weeds. The HOPPER is native to South America.
PS Anyone want to tell a computer nerd how to post a link here. I´ve looked for the info at tomzap and can´t find it. If it involves cutting and pasting, I have no ideaof that either. Thanks.