Your cats are bored!!! Get them a their own cat tree. It'll give them places to sleep and play. One no-brainer toy is the laser light. You're sitting there watching tv, chilling? It takes a twist of the wrist to get them going and it tires them out! Too much work for ya? How about a battery operated laser light? Absolutely no effort on your part.

How about putting baby blankets or kitty beds in that black shelf? Cheap and easy.

Rule of thumb for being owned by cats: CAT PROVE YOUR PLACE!!! You HAVE to if you want to keep your sanity and your belongings. SEE FIRST PARAGRAPH

Feliway concentrated cat spray! Spray 8 inches from the floor (not directly on cats). Spray on their bedding. I SWEAR by this stuff! I've had MANY cats come and gone through my doors and have not once had a problem with neither them or my cats!

Please don't give up on them.