If they are resistent it would be harder, I think, to switch them to homemade products (like vinegar and water solutions) or diluted solutions of concentrated green cleaners in generic spray bottles than to brand products. So, I'll stick to brands.
Seventh Generation's Glass and Surface Cleaner (I think that's the name) is not even a compromise - it works beautifully on mirrors and windows and doesn't streak.
BabyGanics makes a floor cleaner that works better than anything I've used - green or not green. I know it is available at Babies R Us and a few other places. Otherwise, I'd suggest either BioKleen or Mrs. Meyers all-purpose in a bucket of warm water for floors
BioKleen makes a soy-based soft scrubber that's nice for sinks, tubs and tile. (For the kitchen at work I've been using a very thick slurry of baking soda and Dr. Bronner's Sal Suds in an old, plastic brand bottle with the label removed. I throw in a few drops of orange oil for added cleaning power and the sniff factor - I like orange. My co-workers assume the cleaning lady keeps refilling from a big bottle of 'something'!

)
Method makes a nice wood furniture cleaner. The label doesn't give away its earth-friendliness and Method uses enough fragrance that it will appeal to someone used to non-green.
Good luck.