WE OBTAINED SOME SHUTTLES FROM A CHEMICAL APPLICATOR THIS SUMMER BUT THEY DIDNT HAVE OPPORTUNITY TO CLEAN OUT THEM BEFORE WE GOT THEM SO WE SUCKED OUT THE UNDELUTED CHEMICAL BEFORE WE CLEANED THEM OUT FOR OUR USES SO IF ANYONE COULD USE THIS NEXT YEAR I WILL MAKE THEM A DEAL AS I WONT USE THIS AMOUNT IN A LONG TIME FOR MY PERSONAL USE.