WESTERN Bulldogs coach Rodney Eade says there are no excuses for players who get caught up in illicit drug scandals given the number of warnings issued to them.

Eade, who supports the league's three-strike illicit drugs policy, says it's crazy for players to become embroiled in situations such as Fremantle player Michael Johnson's given the clear ramifications.

Johnson is being investigated by WA police after an alleged drug-related matter that occurred on Saturday night.

"You'd like to think the warnings and what's happened to different players at times and the education that players get mean they would not go anywhere near them or have any link with them," Eade said on Tuesday.

"It's just ludicrous because your career can go down the toilet, one, and you can really hurt the club and your teammates.

"It's just crazy for players to get involved in that."

He conceded it would be naïve for any coach to believe he had a list of model citizens but believed in the Bulldogs' drug-related education.

"We think we're quite diligent in that area, but we'd be silly to put our head in the sand and think every club has Mother Theresas playing for them," he said.

Eade said he agreed with the AFL's illicit drug policy and procedures but said it would be better if more than the club doctor was informed once a player had tested positive twice.