Do lemons attract bees?

I'm looking for recipes for attractants for bees in order to start a new colony in my bee box. I've found several that use the oils of lemons and lemon- like plants, and many of the components of the recipe involve extracts from lemon oils, or products made from lemon oils. I was wondering, wouldn't it just bee easier to use a lemon itself as an attractant? But, I disregarded myself in thinking that the enzymes would repel the bees. Now I'm not so sure. Please leave an answer, and some advice to go along with it. Also, any other ways to attract bees? Special designs for boxes and links for them? More advice would be greatly appreciated. Thanks.