There things that are mostly natural called mosquito dunks and mosquito bits. The bits kill instantly and the dunks are good for about a month. I use them in my koi pond and my horse water tubs. The dunks are round like a doughnut and I tie a biodegradable string on them and tie it to a rock so they sink. Both work great!!
Denise
IT DEPENDS ON WHERE IN FLORIDA YOU LIVE, BUT CHECK WITH CDC FOR YOUR AREA. I LIVE IN SW FL AND GOT WEST NILES 5 YRS AGO, (BACK WHEN I WAS HEALTHY) IN THE LAST 5 YRS MY HEALTH HAS BEEN RAPIDLY GOING DOWN HILL AND I STILL DON'T HAVE ANSWERS BUT A LOT OF SYMPTOMS. I EVEN POSTED FOR THE DR. TO SEE IF THERE IS ANY CHANCE THAT WEST NILE CAN CAUSE MS BECAUSE I HAVE ALL THE SYMPTOMS I HAVEN'T HEARD BACK YET.
THERE ARE A LOT OF RESTRICTIONS ON SPRAYING INSECTICIDES ON AND AROUND THE POND. YOUR BEST BET IS TO STAY INSIDE AT DAWN AND DUSK, PUT ON BUG SPRAY AND KEEP IMMUNE SYSTEM UP.
GOOD LUCK,
PAT
SORRY ABOUT CAPS BUT HAVING TROUBLE WITH EYES TONIGHT