It's a start, but unfortunately both Boss and Behringer make a bunch of different multi-effect pedals, and DOD makes more than one flanger.
First thing is to make sure the voltage on the adapter is correct. The DOD will want 9vdc. I think the others will want the same, but I'm not certain. If your adapter says 9vac then get keep it away from the DOD. The DC or AC after the voltage number is very important, don't screw that up.
If your adapter is within about 10% plus or minus of your pedals voltage requirements, it should work. So a 9.6v adapter will work on a 9v pedal.
The mA requirement of your pedal is a bare minimum. If your pedal says 200mA on it, then it needs a minimum of 200mA. If you can give it 1000mA, that is probably a good thing to do. It will still only use 200mA, but you have some headroom. The DOD wont draw more than 30 mA, the others will draw significantly more, but I don't know the exact figure.
Third you need to know polarity. You just need to make the symbols match on your pedal and power supply.
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It may not look exactly like this, the important thing to look for is which symbol (+ or -) is going to the shell and which is going to the center(symbol I provided is called 'center negative').
DOD is tricky because most pedals use a center negative. DOD is actually a positive tip, but you can buy an adapter to make it work with a center negative power supply. (EDIT: some of the new DOD's are center negative)
Find the symbol on your multis and make sure it matches with your power supply.
If you're daisy chaining all of them off of one power supply then there are other more complex issues that could be at the heart of your problem.