My girlfriend referred me to Sparkle tech window washing. I was at her house and noticed how clean her windows were when I came up. I called them as I left her house that afternoon they were polite and prompt with my appointment. I was scheduled between 8 and 11 in the morning they were here at 8 o'clock. My windows look amazing they have a 90-day service where they will come back and do my exterior windows. I am definitely going to be using them every 90 days love my clean windows.