RELATED: Muni, BART join forces to keep station elevators from being public toilets
Watch the video above for a look at some incidents on trains and at stations and to find out what BART is doing about it.
BART tweeted a statement going into more detail about what they've been doing to combat these issues. The transit agency said: "We hired more officers last year than ever before, we've added elevator attendants and bathrooms downtown, we increased our homeless outreach team and launched a drug diversion program. We sweep Civic Center hallways every 30 minutes."
So what do you think? Share your thoughts on Twitter, Instagram, or Facebook by tagging them #DearBART and we may show your comment online or on TV.
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VIDEO: Man captures video of 'zombie-like' people using drugs at BART station
'Zombie-like' people seen doing drugs at BART station