Hello Welcome to the forum 
Ok first things first.
He dosnt get into sex. Hmmm not many men around like that until they get much much older and usually most of them are still into it. Is it at all possible that there is something medical going on. Low testosterone can effect a mans sex drive, Stress, fatigue, depression. Do you think he has any of these problems? Do you know that he is faithful and is he kind to you even though he is indifferent at home?
Well we will try to cover them all.
pheromones wont cure him of anything but they can get his blood flowing and perk him up a bit. 
You need to talk about why he feels this way about sex and make it clear to him that sex is important to you and if you are important to him he will make a effort. I would get Instant Honesty for that. It induces deep conversation and makes people open up comfortably.
Possible low testosterone. Copulin products will up that by about 130% when a guy is exposed to it. Gets the blood flowing to all sorts of interesting places. This question is personal and you can say “none of your business” if you want but are you on the BC pill? See it brings down the amount of natural copulins that a women makes normally. Cops are a big part of what gets them frisky. I was on them for years so I need alot to see a effect. Instant sexiness A and B both have cops in them. Lust After Me is Androtics big cop product. MX109 is also good. (I normally dont suggest advanced but this situation may call for it) There is also a heavy duty cop product that we can talk about how to get later. Lets not shock him to much all at once.
IS/A is a more strong confident sexy mix. IS/B is more kittenish soft sexy.
B is out of stock right now and only comes in a big bottle. Just so you know
Fatigue and depression. Ok no pheromones will solve this. See if you can get him to go for a check up. Instant Shine may help somewhat but it is no cure for depression. Its a mood enhancer makes people feel upbeat and sort of optimistic.
Now if you suspect something else is going on then prehaps you should kick his ass to the curb but I get the feeling its not that. I think he is just in a rut and we need to shake him up a bit.
I have a thread in the ladies section on fun little things you can do to spice things up. This along with the pheromones should raise the dead.
I also want to mention that this just may be his personality. The indifferance part. He sort of reminds me of my husband. He is all smiles out in the world but when he gets home he can be sort of indifferent. He is sexually active but he is stressed out alot. He is happiest when sitting behind the wheel of his race car.
Course me being me I wont stand for that so I spice things up all the time. We have talked about it and he says home to him is a place to unwind and veg out. He is happy to see me and spend time with me but people are clammering at him all day and all he wants to do is veg out when he gets home. I just say ok and give him some space and put on something sexy or give him a massage and the next thing you know he is snapping out of it LOL.
If you have any questions just pop on down to the ladies section and we can come up with a plan
Tisha