Jamie Jarvis and Steve Dell both took to the field following their suspensions for the opening game comng in for Daly and Ian Lovegrove as the Rebels reverted to a 4-4-2 formation from the 3-5-2 they used on the opening day.
Slough were the brigher of the two sides in the early stages with Adam Wallace having two efforts well blocked and Gareth McCleary went close having beaten his man on the right before cutting in and firing over.
Harrow had a claim for a penalty dismissed as a shot was blocked by the arm of Jarivs.
Slough took the lead through Odhiambo with nineteen minutes gone. A Matt Glynn corner was headed back across the goal by Jarvis and the forward headed home.
McCleary, a threat throughout, setup Wallace only for him to see Kieron Jimmy make a strong save and James Bent fired over the top of Kieron Drake, but fortunately for the Rebels also the bar, as Harrow threatened at the other end.
Elliott Onochie should have equalised for the home side as the ball evaded everyone on the way through from the right and the striker closed into goal. Under pressure from Drake, the striker, who had scored three times for Harrow against Slough in the previous season, fired agonisingly wide of the far post. The striker did beat Drake with his next chance, but the Rebels backline had held their line well and the striker had been ruled offside.
Bent again went close with an opportunistic strike having intercepted a pass out from the back by Dell. Spotting Drake out of position, the midfielder took an early effort but Drake saw it wide of the post as the home side enjoyed their best spell of the game.
Leigh Mason tested Jimmy again as the midfielder beat his man on the right and fired a curling effort towards the near post, but the Boro keeper matched it with a good save, tipping the ball over the bar.
The home side had a good early chance, again falling to the dangerous Onochie. A ball in from the right evaded the leap of Jarvis and the striker headed his effort off target.
Slough extended their lead with just over an hour gone. Steve Dell's long throw from the right was flicked on towards his own goal by former Rebel Ricky Browne and Odhiambo reacted quickly to guide the ball into the net with his second headed goal of the game.
The second goal gave Slough renewed confidence and they began to move the ball around well. One good move involving sub Daryl Harris and Odhiambo saw them play in Leigh Mason but his curling effort was too close to Jimmy. Glynn was next for the Rebels to have an effort, but his volley from just outside of the area was narrowly wide with Jimmy rooted to the spot.
Harris went close, latching on to a lumped ball forwards from Mason. The young strikers persistance saw him pressure the home defence into mistakes and he flashed an effort just wide. Again, the subs pace was causing the Harrow backline all sorts of issues and having been played in behind the defence with just Jimmy to beat, his attempted lob was turned wide by the fingertips of the keeper.
A much improved performance from the Rebels and a very well deserved three points.
Harrow Borough Lineup
Kieran Jimmy, Daniel Nielsen, David Idemudia, Wayne Walters, Rickey Browne, Kwasi Frempong, James Bent, Gary Meakin, Ellliot Onochie, Daniel Leech, Albert Adomah. Subs: Daniel McGonigle, Junior Adeoye, Abby Nsubuga, Kai Williams, Keita Karamoko