Referral Program Get A FREE QuoteAND your weekends Back Here’s another awesome reason to hire CHRIStal Clean… We offer a great referral program!!! Tell people about us. After their in-home quote, we will direct you to take $10 off your next cleaning! Once our new client has their 3rd cleaning, we will direct you to receive $100 off on your next cleaning! That’s a total of $110 in savings! This offer is UNLIMITED!!! So start referring!