The performance was an improvement on Tuesday evening’s home defeat against Hungerford Town, but the result was the same, with the damage done in the opening six minutes of the second half.
Slough made several changes, with Mark Nisbet and Guy Hollis coming straight in to the back line for their first starts of the season.
Josh Jackman fired a volley wide early on, whilst Dartford’s best chance fell for Jack Barham, who tried to loft the ball goalwards, but Sam Togwell headed clear.
Jack Jebb went close for the hosts, showing great vision but firing narrowly wide from distance.
Late in the first half, Dan Roberts forced goalkeeper Ethan Wady into a fine save, the Dartford number one tipping the ball over the bar.
Then, just seconds into the second half, Dartford took the lead with Dickson turning the ball home inside the six yard box after brilliant wing play from from Barham on the right side.
Just five minutes later, Dickson had his second and Slough had an uphill struggle ahead of them. Slough conceded a free down near the corner flag, and Jebb’s expert delivery was turned home at the back post by Dickson amid poor Slough marking.
Slough mustered efforts from Jackman and Paul Hodges – the latter’s strike hitting the outside of the near post in between the two Dickson goals – but struggled to find a way through a resilient Dartford despite the introduction of more attacking options in Matt Lench and Warren Harris from the bench.
Harris went close to reducing the arrears as he latched onto a long kick from Jack Turner and poked the ball goalwards, but Connor Essam was able to clear as the ball rolled toward the goal line.
There was controversy ten minutes from time as Dartford’s Jacob Berkeley-Agyepong was shown a straight red card for a late tackle on Lee Togwell, but even with a numerical advantage Slough could only offer a headed effort from Harris which was wide of Wady’s goal.
Ethan Wady, Jordan Wynter, Gavin McCallum, Jack Jebb, Connor Essam, Tom Bonner (c), Luke Allen, Jacob Berkeley-Agyepong, Chris Dickson, Jack Barham, Noor Husin. Substitutes: Alfie Pavey, Jazzi Barnum-Bobb, Josh Hill, Charlie Sheringham, Elliot Romain.