Mealy evil

Mealy evil

I have mealy worms all over my Pothos... I can only assume they were there when I got them or in the horrendous potting soil I ended up getting (and replacing quickly). But they appear here for good. I rub off the leaves and stems with alcohol almost weekly... but they aren't getting the hint. Other than buying expensive pesticide (I'm flat out broke) is there another way to get rid of the nasty cottony balls of annoyance?
Dragonwing begonia help

Dragonwing begonia help

ladies and gentlemen…

ladies and gentlemen…

Pictures of a red sunflower.

Pictures of a red sunflower.

So this is my room

So this is my room

Thanks for ID on zinnia

Thanks for ID on zinnia

Plant ID Help!

Plant ID Help!