Try one of these...
TAURUS MODEL 45 TEN .45/.410 (2.5" chamber)
I'm not recommending this for everyone, but I have three cans of high-octane LEO-grade pepper spray placed around the apartment.
The reasons are (a) we're currently in an apartment and (b) wifey is not a huge gun person. She doesn't mind me having a few, but they're not her cup of tea. And one always thinks about the potential problem of sheetrock walls on the hallway side, with possible bullet penetration (the floor, ceiling, and three other walls are concrete).
Near the front door is a huge 16 oz can, larger than the bear sprays I used to carry, and about the size you might have seen used by Dog and his bounty hunting family.
There's a 3 oz fogger on the bedroom nightstand (also a 70 lumen xenon flashlight and some other goodies), and a 2 oz streaming OC unit near my desk. Finally, there are a couple small caliber revolvers laying around.
It would be "better" to have a Rem 870 12g Police and a Ruger Alaskan in .454 Casull laying around, but not at all practical. Or necessary, since the last incident around here was a parking lot purse snatching about 3 years ago.
If any of you are looking at OC (red pepper) sprays for home or personal use, I did some intensive research and the "best" LEO-grades seem to be Sabre, First Defense (go for the new X2), and Fox. Avoid everything else, there are no validated standards for this industry in terms of potency, quality of ingredients, or propellants.
9MM or .38 Special Glasers Safety Slugs if you're worried about penetrating walls.
Condiments should not be used for personal defense.
Your pepper defense will get you killed for sure. Get a gun.
Try one of these...
TAURUS MODEL 45 TEN .45/.410 (2.5" chamber)