If I pay for professionals to take care of our bed bug problem, can I legally take it off the rent?

Okay, we have been living in a multiple apartment complex and have had to have the landlord spray for bed bugs 3 times and I'm still being bitten. Two days ago was the 3rd time within an 8-month period. We caught a live specimen the last 2 times. I cannot find them, but they are eating me up. I'm on medication because of the pain and allergic reaction I have to them. My boyfriend and I are both disabled, and around 60ish and will be moving to Florida in October for good and have been saving a little money to enable us to do this. Moving between now and then doesn't make sense when we have just a few more months to go. When we called him, he was irate and right down nasty, I was not moved one bit because we pay our rent on time and to the penny, never ever been late not once. However, he did come to spray the next day, but I'm still being bitten even after 2 days. I want to call professional exterminators and pay for it myself and take it off the rent. I don't want to cause us to get put out when we're so close to just leaving the state altogether. Can I do that and how would I go about it? Will someone help me please!