Somewhere in the basement is a BB Gun...

It sits on the deck, defiantly, with  cheeks full, waiting to deposit its mouthful  my car. I used my power vac to vacuum every trace of any substances from my engine and under the hood cover, even taping the covering closed. I spread chili powder on the engine where the acorn deposits were. Yesterday, the tape was ripped off and seedy deposits are stuffed under the lining of the hood---again. Stronger measures are called for.