Hello Everyone:This guide is for an amazing cleaning product called "Mean Green". You can find in the the cleaning products aisle in "Walmart". I lived in an aprtment with not much air circulation and a smoker. I had white celing fans and white ventiian blinds and I couldn't completely get the cooking marks and smoking residue off them. I tried evry product on the market but nothing worked to my demanding satisfaction until my sister-in-law recommended that I try "Mean Green" from Walmart. Well , I thought why not? I've tried everyting else. I tried it on the white ceiling fan first. Just sprayed it directly from the bottle on the blades I wanted to clean, waited 5 minutes, came back and wiped the blades with a sponge dampeded with warm water and lo and behold if they didn't look as good as the day we bought the fan. All the dirt, dust, cooking grease and petrified insects completely disappeared. So then my husband took down the venetian blinds that looked clean but sort of dingey and sprayed them and they came out white as can be. We were very impressed and have tried it on various other things such as plastic garden chairs, bar-b-que grills, white wall tires, and quite a few more. It works like a charm. The only bad things about it is that you very DEFINITELY have to wear gloves when using this product and you have to rinse well. Hope you try it. Monicat5112.