Marijuana users can all agree that we should legalize cannabis. But that doesn’t mean they agree on what types of cannabis people should use. Just like with anything, certain marijuana strains have its fans and its critics.

Here are the six most divisive marijuana strains:

6. Green Crack

If something is compared to crack cocaine, you sort of know what to expect. But many people don’t like the intense buzz and boost of energy provided by Green Crack, and prefer a more mellow experience.

5. M-39

M-39 originally became popular in Canada, supposedly because it was an easy strain to smuggle places. The strain is now known for having a fairly mellow high, which many people crave. But others find the smell to be similar to tar, and combined with it not being too potent makes it a must-avoid strain.

4. Cat Piss

Considering the name, it’s obvious that some people would not be fans of this strain. While it’s known to give a particularly powerful high, which many people like and one of the reasons it’s relatively popular, many note that it does not have the most pleasant aroma, as the name implies.

3. AK-47

AK-47 is actually a pretty popular strain for first-time growers because it takes very little time to grow. And while some people are fans of it, it’s also known to not have any super noteworthy characteristics that make it stand out above other strains.

2. Sour Diesel

To use a cliché, Sour Diesel is an acquired taste. It’s known to have a very pungent smell and sharp taste, that some people love and other people hate. It’s also a very powerful strain, which again can lead to people loving it or hating it

1. Blue Dream

Blue Dream is probably the most popular marijuana strain in America, so like all popular things, it has its haters. Most experienced and sophisticated cannabis enthusiasts see Blue Dream as an unremarkable strain that doesn’t offer anything noteworthy. But obviously it’s popularity prove it has its fans.