If you are doing a painting project you may want to check out FrogTape, it keeps paint out and keeps lines straight.
Check it out.
What makes FrogTape different from other painter’s tapes?
FrogTape is the only painter’s tape treated with PaintBlock® Technology. PaintBlock is a super-absorbent polymer which reacts with latex paint and instantly gels to form a micro-barrier that seals the edges of the tape, preventing paint bleed.
