This advice is geared to a typical NOB (North of the Border) owner who has a pool and pressurized water system (hydro-pneumatico)
1. Definitely drain the pool or treat it with a permanent larvicide like Copper.
Standing water is the main preventable cause of Dengue virus transmission here in Yucatan. Consider treating the residual water with extra doses of copper salts, to kill any larvae that grow in future rain accumulations. Adding extra copper also keeps your pool from becoming an algae swamp. (NOB snow bird untreated swimming pools in unoccupied homes are a major cause of Dengue transmission.)**
Note: If you add extra copper to your pool, then drain enough water out of the pool water when you return to give a final safe copper-algicide concentration. (The copper treatment works very well at treating the residual rain-water that accumulates in supposedly “drained” pools.)
2. Shut off the gas valves and lock/chain the cylinder or tank so something secure. (These are just too tempting: easy to carry, easy to convert to cash, etc.)
3. Definitely turn off your hydro-pneumatico, and open the water system’s air vent valve on the techo/roof. Use simple gravity feed to supply plumbing for watering plants etc…
4. If there are no plants etc to water, then give the water system a final chlorine treatment: 1/4 cup of normal un-scented NORMAL bleach per 275 gal/1000 liter tinaco – assuming your tinaco has only clean water. Turbid water or water with organic matter in it requires more bleach.
5. After the chlorine has mixed well in the tinaco, then drain some water through each sink & tub/shower until you smell a little chlorine (proving that you have disinfected the lines and the water in all lines).
6. Shut off the water system: Shut off the pump & possibly close the valve to the tinaco. This way, if your system has a subterranean / sub-floor leak while you are away, the pump is not running every 20 minutes to fill the tinaco. (This problem just occurred for a beach buddy – creating a $4,000 peso per month power bill just for running the pump and a few security lights in an unoccupied house).
7. Cover/block all drains…. sink drains, floor drains, etc. Put magazines over the floor drains & shower and tub drains, a bit/ball of wire screen/mesh in the kitchen and bath sink drains to stop:
- Dengue breeding sites for mosquitos, and
- Cockroaches that love to travel between the septic tank and the drains…. the big rascals (cucarachon!) even swim through the toilet water – back and forth between your home and the septic sludge -
Some people advise pouring enough mineral oil on top of the water in drains to stop evaporation and to stop mosquito breeding. We don’t know how well this works, but it sounds good.
8. Solution to diving cockroaches? Saran Wrap the toilet bowl. It stops the mosquitos from breeding and blocks the roaches from their super-highways…
9. Saran Wrap the top of the toilet tank (under the lid) to keep mosquitoes from breeding in the toilet tank water.
10. Either shut off each toilet’s water supply valve or close the valve between the tinaco and the house, since many toilets slowly leak – or at least shut off the water supply valves at each toilet….
Note: shutting off the water to & from the tinaco might be a problem if you have a caretaker watering plants, etc. – but it does discourage Semana Santa and Summer Vacation party-ers from using your patio and pool for their fun.
11. Shut off, empty and clean the fridge and prop the door open to keep it from molding.
12. Prop open the doors on closets, cabinet(?) and open furniture drawers a bit to allow air-flow & discourage mold growth. Some caretakers like to leave one or two windows open an inch and to turn on ceiling fans for several hours per week to keep things fresh.
13. In addition to draining, locking, and blocking, snowbirds could give their US or Canadian phone numbers & e-mail addresses to their neighbors, and also to close local reliable friends – and have the friends/neighbors check-up on the caretakers actual activities.
14. Make it clear to the caretaker who the local contact is, and emphasize that the caretaker should follow the contacts instructions, and not simply ignore the local contact’s requests for regular property upkeep and pool water treatment.
** Are snowbirds good neighbors?
At Yucalandia, we’ve noticed that many NOB snowbirds return to sparkling pools and neat-as-a-pin homes – due to their caretaker’s last minute efforts. Before the hurried clean-ups, the typical reality is: a pool that has been a green scummy mess for months – exposing neighbors to Dengue while the house is vacant, weedy ugly yards and property frontages, etc. Caretakers often do nothing, until just before the owner arrives… It’s a sure sign that a snow-bird is migrating south when we see a flurry of activity at their home.
The result? The absent home-owner thinks that they are good neighbors, when they often aren’t – letting their places look just awful, weedy, brushy, with trash holding water: prime mosquito breeding grounds, until just before they return.
We mention all this not out of hostility, but because we have 2 friends who’s kids have gotten really sick with Dengue, precisely due to absent snowbird neighbor’s brush piles and scummy pools. These are conditions the caretakers are asked to maintain & paid to maintain, yet the absent homeowner had no idea how things really were. Good intentions with no follow-through = sick kids & sick elders.
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Feel free to copy with proper attribution: YucaLandia/Surviving Yucatan.
© Steven M. Fry
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