How often do you need to place Donation Boxes?

[Guomindang]

Do you put one at each "window", or "every X squares", or just a couple by each enclosure? I'm currently just throwing out a lot, but it looks quite ridiculous as I almost have more donation boxes than animals

[HJR]

Usually I place them after a bit of ingame time has passed. During that time I watch the habitat to find out where the guests are gathering. Where it it busy I place the donation boxes.

[MrHappy]

Place them every time. Two or three per habitat with an info screen and info speaker next to each one.

Donation boxes are one of the main incomes for your zoo.

[MacazMania]

I place donation boxes where the guests gather - habitats and exhibits. They only cost $50 and gain so much more within seconds, so worth having heaps I'd say!

[Emma]

You really cannot have too many donation boxes. I put them at every viewing point.

[Shoebsy]

Same as most other people.. 1 at every viewpoint.

Guests will donate by viewing a specific animal, and than will attempt to find a close donation box to them. For style, you don't need too many in a single habitat. But making sure you have at least 1 to every pen is a good rule and makes tonnes of money.

[kgkong]

A donation bin at the spots where guests stop the view exhibits and habitats are the best places to put them. Sometimes only having 1 bin per habitat can cost you money. Yes guests will wander about to find the nearest bin, but I found they are much less likely to donate if they have to walk more than a few dozen meters just to make a donation.
Experiment around.

I put usually 1 donation bin per exhibit/group of exhibits in a very centralized spot. And I'll do 1 bin per small habitat with small viewing. Otherwise, it's one at the entrance to the viewing and one at the exit to the viewing and sometimes a third in the center. Never had money issues following this method. I also take numerous building breaks so as to not keep the zoo constantly changing and constantly losing money from constructing. Nothing like making 15k donations off a small group of peafowls and one or two exhibit animals.