Former Fort Collins Mayor Ray Martinez is getting guff for his new book, a piece that criticizes marijuana.

Martinez’s book, “The Truth About Marijuana, America’s Snake Oil,” was published earlier this summer. It aims to discredit claims by pro-marijuana groups that the drug is safer than alcohol.

“I’m just trying to destroy the misleading facts that are being put out there,” Martinez told the Denver Post.

As a former undercover drug agent, Martinez crusaded last year to put an end to medical marijuana dispensaries in Fort Collins.

Reviewers on Amazon have disparaged the book as false propaganda and, well, boring. Four reviewers weighed in, giving the book two out of five stars.

Others, mostly prosecutors, have praised the book, according to Martinez’s website.

“Ray candidly brings to light the dangers and adverse affects of the use of marijuana and the abuses committed by medical marijuana distribution facilities,” said former Eighth Judicial District Attorney Stu VanMeveren.

“This book should be mandatory reading for our elected representatives who make decisions relating to proposals for