you can make your own mighty wash with warm water- some ivory soap and a little 'smidgeon' of isopropyl alcohol, I am not familiar with the actual mighty wash but it may be similar. I agree neem sucks if you use it on your plants- BUT if you have other houseplants you MUST use a low dose spray on them at least 2-3 times a week just to keep your house free of pests.I actually cut the strength by 1/4 and spray all my houseplants daily - even though they are on the opposite side of the house.
I have a jungle in my home and I had to learn the hard way- the houseplants will really infest your crop if not careful- be especially careful when bringing any plant into your home, even if it came from a greenhouse and will be on the other side of the house- if it has mites they are hungry and will find your crop….