This book is hot, and believe me, it's rare for me to say that. If you're a pansexual person who hates having to switch books to get your fill of delicious gay male erotica, lesbian erotica, and straight erotica, this might be for you. If you love for all sexual boundaries to be crossed, this is the book for you.
Not since Carol Queen's "The Leather Daddy and the Femme" have I encountered such a sexy, jam-packed full of action erotica book to push all my buttons. The only thing that would have made it better would be the inclusion of some gender-variant people like the abovementioned book, but maybe this is better, as people who prefer manly men and feminine women won't be put-off.
The plot here is threadbare, a setup essentially to allow for the hot sex. If you're looking for the same sort of hot pansexual sex with a little more of a plot and characterization, you might want to try Bill Lee's other bisexual novel, "Different Slopes". This book revolves around a woman who gets picked up in a casual, anonymous hookup in a bar and, after a night of hot sex, explores the ranch she finds herself at. The man she had sex with ends up living there alone with his teenaged son, and consequently, in need of a woman's touch. Our protagonist agrees to stay there with them and cook and clean and act as a maid in exchange for lodging and food and all that jazz. Of course, it's a lot more hot sex with everyone and a few additional weekend visitiors to the ranch. The main form of a problem is in Sally's past, which is coming back to haunt her. I won't say much in way of that so as not to spoil it, but it's rather weak, unrealistic, and quite too-tidily solved up.
This book ought come with a warning, however. There are many elements in the book that may put off some readers. Included in this are sex with a minor (one case which I would clearly put in the category of 'pedophilia'), incest (male-male and male-female), and sexual abuse. One of the minors is a fairly full-blooded teenager who engages in sex with adults as well as his peers, and while that might be considered somewhat okay, another scene involving young children is most certainly not. There is also the issue of incest; one ongoing relationship in the book is incestual but consensual (how consensual it can be if the participant is a minor is up to you to decide), and the other case of incest is blatant sexual abuse (whose aftermath is dealt with rather poorly). These sexual encounters do not make up a large portion of the book, but they should be mentioned for readers who may take offense. Be forewarned!
The writing style is mediocre at best; Lee writes nicely and while he tends to often fall back on less-than-creative sexual descriptions, he varies things enough to keep it interesting and has less typos and cliches than some of the other poorly written erotica out there.
If you're looking for something to get you off and get you off fast, "Bi Ranchers, Bi Mates" is the way to go- it's hot, it's dirty, it's bisexual, and it will do the trick. If you're looking for something more intellectual, more queer-oriented, more explicitly romantic, or with a more engaging plot, you'll have to look elsewhere. But it's great one-handed fiction.
Hope that helps you!