Thread:Galia862/@comment-22439-20130609233018/@comment-4995735-20130613200749

On the other platforms, you can visit as many friends as you would like. The cleaning icon just won't show up after you have cleaned the maximum number of buildings. You can only clean 3 structures on each island and they are chosen randomly by the app.

It sounds like the Kindle Fire version is different in that regard. You might check on the ==> Versions page. There are links to other sites with more specific info for other platforms.

~radmand