I need the help and expertise of a professional in the area of pest control and pesticides.?

The house my husband and I are moving into has a lot of black widows in the garage. We had a pest management company come and they sprayed a residual spray right behind the water heater (which is in the garage) and then bombed the garage. I am worried about if the spray contaminated the water. The spray was cy-kick cs cyfluphrin 1 percent epa 499-470 manufactorer micro-gin. How safe is it? Also, what can we do to stop the spiders from making their home in our garage?I need the help and expertise of a professional in the area of pest control and pesticides.?
the only way for the insecticide could contaminate the water would be if there was a break in the system and if there was a break in the system the water spraying everywhere from the pressure would not let in chemical inside the tank... best thing to do for spider is to not let clutter build up that they could hide / live in. The fogger used is just a contact insecticide with no residual, the cy-kick is a good residual insecticide, but spiders are not insects, and because of their living habits are not always controlled well with common treatmentsI need the help and expertise of a professional in the area of pest control and pesticides.?
Cyfluthrin is used extensively as a controlled release insecticide in residencial applications. It is not dangerous to anything except insects if used properly. The spray cannot contact the water inside the hot water heater or the water pipes, so don't worry. If the pest control people used cyfluthrin and a bomb you should not have spider problems for quite a long while.
I'm glad you got an answer to the first question, because I'm reluctant to deal with it except to say that I wouldn't be bothered if I were you. You asked what to do to keep spiders from living in your garage. Spiders are relatively bold and will keep trying to live anywhere they find feasible. To greatly reduce their presence in the garage you simply have to use it. Open it often, let air, light and a lot of activity be all present, keep a long broom for sweeping away cobwebs from the ceiling often, especially in the corners. And don't let anything sit undisturbed for long periods in the garage, or there'll definitely be spiders, especially if there are a number of objects close to each other with spaces between them. If you must store stuff, put them right up against the wall and arrange them so there are no spaces. Spray pesticide periodically on and around stored things and keep the whole area clean.





Spiders aren't trying to bother anyone, just survive and reproduce, so it's up to you to ensure that they do that in some place other than your garage or home.