1) Air circulation makes a huge difference. I would install a ceiling fan or at least have a fan in the room to push air around. Stagnant air makes rodent smell much worse.

2) A few drops of vanilla extract in their water. It makes their urine less foul.

3) Kiln dried pine bedding. It's cheap and works great for the smell.

4) Clean at least once a week
X2 all of this. You really need to be cleaning once a week for most of those cages. You didn't specify what you have in the 10 gallon, but as an example, I only ever have one female with a litter in a 10, and they get moved to either a tub or a 20 gallon long by the time the babies are about 2 weeks, and that 10 gallon is cleaned once a week.

I also only have at most 2 females and their litters in a 20 long or a tub until weaned, then they all get split. I do have a 20 long that I keep 3-4 females in during their "rest" between litters. Again, cleaning once a week.