thank you steve for your response but we have tried all these things. my yard is nicely shaded with large trees we are serviced once a year. but maybe the problem is we live in new orleans, louisiana it is very hot here. i am just tired of paying the high energy bill. and also to the practical joker, you are not funny at all. and i did leave my e-mail address so if i were to be contacted it would be by e-mail. why do people like you even exist.