Sentence examples for are very effective. from inspiring English sources

They are very effective, but may cause serious side effects.

"They are very effective".

You are very effective in Iraq".

In the desert, they are very effective.

"They are very effective holiday homes.

"They are very effective and clever marketeers.

And all these things are very effective.

"These Web logs are very effective," she said.

Twitter, or the Foreign Office on Facebook, are very effective".

"Broken wine bottles and hypodermic needles are very effective.

This sounds old fashioned, but procedures are very effective.