If you're going to live on the flight path to Toronto's Pearson Airport, you could be in for a smelly surprise.

For the second time in a week, a family in Mississauga, Ont., says they've been "poo-bombed" by passing aircraft — although Transport Canada doesn't agree.

"It just covered the top of my mom's car, dripped down the side, splattered onto my car and back onto my dad's," said Lindsay Sullivan describing the damage from above.

The driveway of the Sullivan family home is clean now, but on Wednesday it was covered in something else.

"It smelt really bad," said George Sullivan. "It smelled like it was feces."

The family took photos of what they discovered.

And George Sullivan says he believes he knows the source of the mess.

"There's no way one bird could have done it, unless it was a pterodactyl," he said. "It came from an airplane."

GO bus driver Gary McCourt also shared photos with CBC News of what he says he drove through on Dufferin Street near Highway 407 last week — something McCourt described as a 'brown column' coming down from the sky.

It was just last week that another Mississauga family discovered a mess in their backyard — which is not far from the most recent incident.

Both Mississauga families believe they were bombed by "sky poo" — frozen waste that fell from the side of passing aircraft.

Transport Canada took samples of the first incident and is looking into the second one.

It says airplane washroom reservoirs aren't supposed to open during flight, but leaks can happen.

On Thursday, it concluded "that the debris that fell on the Mississauga residence last week did not fall from an aircraft. Consequently, the investigation is now closed."

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  • 15. Bank Of America

    In December it was revealed that BofA is America's <a href="http://www.huffingtonpost.com/2012/12/11/bank-of-america-customer-service_n_2276967.html">least favorite bank</a>. <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.

  • 14. CenturyLink

    CenturyLink is the <a href="http://www.centurylink.com/Pages/AboutUs/CompanyInformation/">third largest</a> telecommunications company in the United States. <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.

  • 13. Delta

    Delta's workers were recently <a href="http://www.bizjournals.com/cincinnati/blog/2013/01/delta-has-3rd-rudest-employees.html">rated the third rudest</a> airline employees. <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.

  • 12. U.S. Airways

    U.S. Airways' score has <a href="http://www.theacsi.org/acsi-results/acsi-commentary-june-2012">improved since</a> last year, but customers still aren't completely satisified. <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.

  • 11. Twitter

    Lots of customers take to Twitter to talk about <a href="http://www.mediabistro.com/alltwitter/twitter-customer-support_b32593">different companies' customer service</a>, but it seems that many believe it is Twitter's customer service that's lacking. <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.

  • 10. American Airlines

    Earlier this year, American Airlines dealt with a <a href="http://www.huffingtonpost.com/2012/09/19/american-airlines-canceled-flights_n_1896137.html">surge in canceled flights</a>, and their customer service rating indicates they may have had trouble handling the issue. <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.

  • 9. Cox Communications

    Cox introduced new, <a href="http://www.theacsi.org/acsi-results/acsi-commentary-may-2012">unpopular fees</a> this year, which may explain why they made the list. <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.

  • 8. LinkedIn

    Even though Linkedin's customers are reportedly dissatisfied, the company's CEO, Jeff Weiner, was named one of the<a href="http://www.huffingtonpost.com/2012/12/28/best-ceos-2012_n_2377501.html"> best CEOs of 2012</a>. <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.

  • 7. Time Warner Cable

    Time Warner introduced a new, highly unpopular <a href="http://www.businessinsider.com/dodge-time-warners-new-modem-fee-2012-10">fee</a> this October. <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.

  • 6. United Airlines

    United is the <a href="http://www.businessinsider.com/15-worst-companies-for-customer-service-2013-1?op=1">lowest rated airline</a>, a spot that was previously held by Delta. <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.

  • 5. Facebook

    Everyone uses Facebook, and everybody loves to complain about it. <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.

  • 4. Comcast (Television Service)

    Comcast lost <a href="http://www.businessinsider.com/comcast-loses-nearly-400000-subscribers-in-last-year-2012-8">over 400,000 subscribers</a> last year. <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.

  • 3. Charter Communications

    <a href="http://www.businessinsider.com/15-worst-companies-for-customer-service-2013-1?op=1">ACSI</a> called Charter Communications the "perennial industry laggard." <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.

  • 2. Northeast Utilities

    Northeast Utilities' customers suffered from <a href="http://www.theacsi.org/acsi-results/acsi-commentary-april-2012">long power outages</a> last year. <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.

  • 1. Long Island Power Authority

    LIPA left <a href="http://www.reuters.com/article/2012/11/14/us-storm-sandy-lipa-idUSBRE8AD0VI20121114" target="_hplink">thousands of customers powerless</a> for more than two weeks after Hurricane Sandy. The utility company was so widely criticized over its handling of the super storm that the CEO stepped down. <a href="http://www.theacsi.org/?option=com_content&view=article&id=149&catid=14&Itemid=214&c=all&sort=Y2012">Read more at ASCI</a>.