<human>: Can you condense the text into a few key points?

I posted something similar in askreddit, only person to comment told me to try here. Fingers crossed!

 My mom currently has 4 cats: F, S, A, L. F is the oldest male, and is very skittish around everything. S is the father figure of the house, having raised two cats now. A is the first cat raised by S, and she can hold her own, but she prefers to avoid conflict. L is the youngest, second raised by S, and is a brat.

All 4 currently have worms (trying to get money to have all 4 treated) and I know that can cause the problem we are having: the cats all are peeing around the house. However, I don't think worms are the problem. Recently, I've found out L has a lot of fun chasing the cats out of the litter boxes when they go to do their thing. 

We have 4 litter boxes, and all are in low traffic areas in the basement. Do you have any suggestions to stop L from wreaking havoc? And do you think that will get them to stop peeing now that the house has the lovely aroma of cat pee? Side, bonus question, do you know how to get rid of the smell of pee? The best we've found is baking soda.
<bot>: 4 cats have worms, may cause them to not pee in box, but also youngest of 4 likes chasing them out of box. Suggestions?