The city of Brownsville crews were hard at work Friday in areas with heavy amounts of standing water.
Friday we found a crew at Faulk middle school in the Southmost area doing what's called larvaciting.
"We drop pellets in the water that prevent mosquito eggs from forming if area are left untreated, it becomes a perfect reservoirs for mosquitoes."
The Cameron County Health Department was also busy at work hitting areas with a lot of standing water.
"to me the worst areas where santa rosa near 508 Combes area those are the areas some of the areas the staff some be working towards."
Both the county and the city of Brownsville says this isn't just a one day job. The city says they will continue larvaciting throughout the weekend.
"The next step for us would be spraying but we contemplate that once we start to see there is an increase in the air for mosquitoes we start to get phone calls there is mosquitoes and take a case by case or if needed a city wide approach."
The city recommends cutting your grass and keeping less that 18 inches to prevent standing water.
If you need to report problems with mosquitoes in the city of Brownsville you can call 542-7511