DIY - Homemade window cleaner

I have been trying out homemade cleaning product recipes, and am in love with this one for window cleaner:

2 cups rubbing alcohol (70 percent isopropyl)
1/2 cup ammonia
1 tsp dish detergent (liquid)
top with water



As a grandmother, and home daycare owner...I seriously go through ALOT of window cleaner and I have found that this works wonderfully for my needs.