We have used Senske for about 2 years and they have not pushed themselves on us as another company has in the past. I must say however they chose a windy day to spray our trees in the back and ended up spraying our sliding door at the back porch and several kids' toys. They apologized but did not compensate for the clean up or comp us the price of the spraying.
We will think about reducing the frequency of using them.
If you use them, make sure they know your concerns with frequency and conditions.