 Excuse me, renewed each four to six months, six weeks. But the Greenwich Health Department says we can all do our part by eliminating standing water on our properties. We can also protect ourselves from getting West Nile by staying indoors during early morning and early evening hours when mosquitoes are most active. There were five human cases of West Nile virus in Connecticut last year, none fatal. And while the mosquitoes may enjoy the hot, humid weather, we humans do not. And the town of Greenwich has once again opened cooling centers as a way to get out of the heat.